FCC ID: 2BCWF2CHESTIMMV2 Electric stimulator

Technical File User Manual 1. Manufacturer A. Legal Manufacturers Name WAVE COMPANY Ltd. B. Legal Manufacturers Address B-#716 DMC Hi-Tech Industry Center, 330, Seongam-ro, Mapo-gu, Seoul, Korea Postcode: 03920 C. Storage and Manufacturing B-#716 DMC Hi-Tech Industry Center, 330, Seongam-ro, Mapo-gu, Seoul, Korea Postcode: 03920 D. Tel number

+82-70-4044-7331 E. Regulatory representative Mr. Sang Chul Lee F. Certificates of Manufacturer i. Business registration G. Company History 2010 Establishment of Odoroso Co., Ltd. 2017 Company name changed to Wave Company Co., Ltd. 2015 Started development of adhesive silicone coated sportswear 2017 Started development of conductive silicone coated sportswear 2018 Official launch of adhesive silicone coated sportswear (Wavewear) 2021 Selected as Mass Challenge finalist 2022 Selected for attracting investment from Stadia VC 2. Product Name ElecSuit: e-Haptic Suit for EMS Workout & VR Games 3. Mechanism A low-frequency electrical stimulator sends microcurrents in a specific pattern into the body through electrodes attached to the skin for providing the user with a virtual sense of touch. 4. Product List i. ii. Elec Suit Controller 2ch e-stim Device Cables iii. Software 5. Elec Suit A. Product Name Elec Suit ElecSuit: e-Haptic Suit for EMS Workout & VR Games_ 20230825 2ch MV2 1 / 14 Technical File User Manual B. Material Brand Name Elecsil A Elecsil B C. Model List No Brand name Color Type Model Name Model Code 1 2 3 4 Black Top ES111 Standard Sleeveless Top Bottom Standard Shorts ES211 Elec Suit Top PRO Short Sleeve Top ES112 Bottom PRO Shorts ES212 ElecSuit: e-Haptic Suit for EMS Workout & VR Games_ 20230825 2ch MV2 2 / 14 Technical File User Manual D. Picture of the product Blue indicates the location of the electrode, which is actually black Front Side(Left), Back Side(Right) No 1 Model Image 2 3 ElecSuit: e-Haptic Suit for EMS Workout & VR Games_ 20230825 2ch MV2 3 / 14 Technical File User Manual 4 E. Indication method of Model Code. ES 2 1 3 L

: Brand name 1. Elec Suit (ES)

: Type 1. Top 2. Bottom

: Color 1. Black

: Model 1. 2021 Standard 2. 2022 PRO

: Size XS. XSmall S. Small M. Medium L. Large XL. Xlarge XXL. XXlarge ElecSuit: e-Haptic Suit for EMS Workout & VR Games_ 20230825 2ch MV2 4 / 14 Technical File User Manual F. Electrode Structure of Elec Suit Fabric i. Spandex Fabric Elastic in all directions ii. Elecsil A Coating Thickness: less than 0.3mm Coating on Fabric Stretchable and Low Resistance Performs the function of reducing resistance for the coated electrode iii. Elecsil B (Black) Coating Thickness: less than 0.3mm Coating on Elecsil A, contacting on skin Stretchable, Adhesiveness and Harmless to human body Pass cytotoxicity test(ISO 10993-5), Skin irritation, Skin sensitization(ISO 10993-10) Performs the function of electrical conduction between coated electrode and skin ElecSuit: e-Haptic Suit for EMS Workout & VR Games_ 20230825 2ch MV2 5 / 14 Technical File User Manual iv. Parts No. 1 2 3 Part name Magnetic button Non stretchable film Insulating film Description Electrically connects the device and conductive silicon by using magnetic force of button. It removes elastic to prevent buttons from detaching. An insulating film is attached to the opposite side of the magnetic button that touches the skin for preventing unwanted electric conduction to skin. Front Back G. Usage i. Electrical Stimulation for Haptic Realization of virtual tactile sensation through electrical stimulation ii. EMS training During exercise, electrical stimulation is provided to the muscles to maximize contraction and relaxation, allowing for high-intensity exercise in a short period of time. ElecSuit: e-Haptic Suit for EMS Workout & VR Games_ 20230825 2ch MV2 6 / 14 Technical File User Manual H. Performance Elecsil A i. 7 * 7 cm size coating sample. Initial distance: 5cm Strain to 10% or 100% and then after waiting 2 sec, release to 0% and then waiting 2 sec. during repeating this cycle, measuring resistance 10% 100 times strain-release (Unit : ) Initial Resistance 0.028 1 time 100% 1 time 0%

50 times 100%

50 times 0%

0.105 0.077 0.403 0.239 0.096 0.098 0.363 0.201 Immediately after strain or release After waiting 2 sec 100% 50 times strain-release (Unit: ) Initial Resistance 0.028 1 time 100% 1 time 0%

8.036 0.807 50 times 100%

26.806 50 times 0%

0.889 7.796 0.657 19.843 0.741 Immediately after strain or release After waiting 2 sec ii. Elecsil B stretch impedance Stretchability Elecsil B on Elecsil A There is no damage even when pulled at 100% strain. Measuring Impedance Wearing the PRO top and then measureing impedance to a pair of abdominal electrodes Impedance, 100Hz (Unit: ) Contact on original skin Contact on wet skin 5.8k Washing durability 3.2k No damage for an appearance after 30 times machine wash ElecSuit: e-Haptic Suit for EMS Workout & VR Games_ 20230825 2ch MV2 7 / 14 Technical File User Manual Impedance for skin contact (unit: ) Before wash 5.28k After wash 5.8k 6. Controller A. Appearance i. 2ch e-stim Device Description of an appearance Top Front Back No. Name RGB LED

+ Button

- Button Power Button Battery indicator LED Electrical stimulation Socket AUX Description Displays the status of the device. Color can be controlled during wireless control. Above the side button Increases the voltage level in manual mode. Below the side button Lowers the voltage level in manual mode. Press and hold the + and buttons together to enter Bluetooth pairing mode. Control power on/off by pressing and holding for about 2 seconds. In manual mode, you can change the electrical stimulation channel by quickly pressing and releasing the button when the voltage intensity is one level or higher. Lights up in red when the battery is charging. When fully charged, it lights up in green. AUX jack (F) type terminal that outputs electrical stimulation Based on the TOP, there is 1 channel on the left and 2 channels on the right. ElecSuit: e-Haptic Suit for EMS Workout & VR Games_ 20230825 2ch MV2 8 / 14 Technical File User Manual type charging Terminal area for charging C terminal RGB LED No. Color White 1 Green flicker once Press the side button to display voltage level control 2 Purple flicker once Quickly press and release the power button to display 3 Description The power is turned on and entered manual mode 4 5 Blue flicker once Blue green flicker once the electrical stimulation channel change Bluetooth pairing status Bluetooth connected status ii. Cables Plug the AUX jack into the electrical stimulation AUX terminal Connect the magnetic terminal on the other side to the ElecSuit. B. specification i. Basic specification 1. Model Name 2ch MV2

(Firmware: WaveEnhanced_v3.0 0516) 3.7Vdc Li-Po Battery, 240mAh about 45 * 65 * 14 mm (D*L*H) about 26g Polycarbonate Recommended within 15 minutes for one-time use 2 channels (4 pads) 2. Rated voltage 3. Power 4. Size 5. Weight 6. Case material 7. Usable time 8. Channels 9. Maximum voltage (500) about 55.5V (Based on manual mode) BLE, 4 multi-point linkages possible 10. Bluetooth More than 100ms 11. minimum command interval 12. Mode 1) Manual mode EMS output of power by pressing buttons 2) Bluetooth mode

- EMS mode (Repeatedly output of power)

- Haptic mode(Cycle 1 output of power) ElecSuit: e-Haptic Suit for EMS Workout & VR Games_ 20230825 2ch MV2 9 / 14 Technical File User Manual ii. Manual mode specification 1. Stimulation Level 2. Width of pulse 3. Number of pulses per pick 4. Frequency 5. Cycle Width 6. Cycle interval 7. Control of channel 8. Wave Slope Lv. 1~15 200 us 2 pulses biphasic wave 1.25kHz interval biphasic wave 3 pairs pulse about 30 Hz 3s 1s Channel 1 and 2 can be changed by clicking the power button Gradually increase voltage intensity (at the beginning of cycle) Manual mode stimulation intensity at each stage Only 1ch 500 load (no connected 2ch) 1ch voltage Lv 1 2 3 4 5 Voltage(V) 12.5 14.9 18.1 22.1 25.3 Lv 6 7 8 9 10 Voltage(V) 28.1 31.4 35.0 38.2 41 iii. Control elements of Bluetooth mode Lv 11 12 13 14 15 Voltage(V) 44.6 47.4 50.3 52.7 55.5 1. Width of pulse 2. Number of pulses per pick 1~5 pairs 3. Frequency 100, 200, 400 us 4. Cycle Width 5. Cycle interval 6. Control of channel 7. Wave Slope 8. stimulation intensity 9. RGB 1~500Hz(Width of pulse 100us), 1~250Hz(Width of pulse 200us) 1~125Hz(Width of pulse 400us) 1.0~10.0s, 0.1s unit control Infinite operation possible without stopping cycle 1.0~10.0s, 0.1s unit control (EMS mode) Controllable with 6 patterns Controlled by pair of channels 1 and 2 (2 types) PAD 1,2,3,4 independent stimulation (4 types) Tilt adjustment at the beginning of cycle 1~1971 RGB LED in the Device R 0~255, G 0~255, B 0~255 ElecSuit: e-Haptic Suit for EMS Workout & VR Games_ 20230825 2ch MV2 10 / 14 Technical File User Manual Control elements picture Overall view Zoom Zoom2 Bluetooth mode electrical stimulation intensity Voltage intensity varies depending on the number of picks, pulse width, and frequency. Fix the number of picks to 3 and pulse width to 200us and adjust only the frequency and voltage intensity variables. Voltage intensity based on load 500. Minimum Voltage(V) Maximum Voltage(V) 30Hz 12.5 57.1 60Hz 9.6 41 100Hz 8 32.2 ElecSuit: e-Haptic Suit for EMS Workout & VR Games_ 20230825 2ch MV2 11 / 14 Technical File User Manual ElecSuit: e-Haptic Suit for EMS Workout & VR Games_ 20230825 2ch MV2 12 / 14 Technical File User Manual 7. Software Wireless control using command control method Test app developed by ourselves nRF Toolbox ElecSuit: e-Haptic Suit for EMS Workout & VR Games_ 20230825 2ch MV2 13 / 14 Technical File User Manual 8. Cautions FCC Compliance Statement This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. FCC Interference Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to correct the interference by one of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. FCC Caution Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. FCC Radiation Exposure Statement This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 5 mm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. ElecSuit: e-Haptic Suit for EMS Workout & VR Games_ 20230825 2ch MV2 14 / 14

Label Location Electric stimulator Model : 2ch E-Stim MV2 FCC ID : 2BCWF2CHESTIMMV2 Manufacturer : Wavecompany LTD. Power : DC 3.7 V (Battery) FCC Compliance Statement This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Model No.: 2ch E-Stim MV2 Page 1 of 1

Wavecompany LTD. DMC High-tech Industry Center #716, 330 Seongam-ro, Seoul, South Korea Tel: +82-10-2991-4171 Date: November 01, 2023 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 FCC ID : 2BCWF2CHESTIMMV2 To whom it may concern:

I, the undersigned, hereby authorize Young-Jin, Lee of KES Co., Ltd. and hereafter referred to as KES Co., Ltd., to act on our behalf in all manners relating to application for equipment authorization, including signing of all documents relating to these matters. Any and all acts carried out by Young-Jin, Lee of KES Co., Ltd. on our behalf shall have the same effect as acts of our own. I, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). In authorizing KES Co., Ltd. as our agent, we still recognize that we are responsible to:

a) b) c) d) e) f) g) comply with the relevant provisions of the certification program;

make all necessary arrangements for the conduct of the evaluation, including provision for examining documentation and access to all areas, records (including internal audit reports) and personnel for the purposes of evaluation (e.g. testing, inspection, assessment, surveillance, reassessment) and resolution of complaints;

make claims regarding certification only in respect of the scope for which certification has been granted;

do not use our product certification in such a manner as to bring the Certification Division into disrepute and not make any statement regarding our product certification which the Certification Division may consider misleading or unauthorized;

upon suspension or cancellation of certification, discontinue use of all advertising matter that contains any reference thereto and return any certification documents as required by the Certification Division;

use certification only to indicate the products are certified as being in conformity with specified standards;

endeavor to ensure that no certificate or report nor any part thereof is used in a misleading manner;

Wavecompany LTD. DMC High-tech Industry Center #716, 330 Seongam-ro, Seoul, South Korea Tel: +82-10-2991-4171 h) i) j) ensure that any reference to our product certification in communication media such as documents, brochures or advertising, complies with the requirements of the Certification Division;

keep a record of all complaints made known to the us relating to the products compliance with requirements of the relevant standard and to make these records available to the Certification Division when requested;

take appropriate action with respect to such complaints and any deficiencies found in products or services that affect compliance with the requirements for certification;

k) document the actions taken. This authorization is valid until further written notice from the applicant. Sincerely Yours, Research Engineer / Mr Ji-Hun Han Wavecompany LTD. REMARK:

1. This authorization letter will be sent along with your application when filing with the Certification Division. Please follow the format and type it on company letterhead and send original to us. 2. 3. Authorized signature must be in agreement with grantee code contact in FCC database.

Wavecompany LTD. DMC High-tech Industry Center #716, 330 Seongam-ro, Seoul, South Korea Tel: +82-10-2991-4171 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:November,01,2023 Ref:AttestationStatementsPart2.911(d)(7)Filing FCCID:2BCWF2CHESTIMMV2 ApplicantFRN:0034244731 JiHunHanofWavecompanyLTD.(theapplicant)certifiesthat,asofthedateofthefilingofthe application,FCCUSAGENT,LLC.isourdesignatedU.S.agentforserviceofprocessfortheabove referencedFCCID. JiHunHanofWavecompanyLTD.acceptstomaintainanagentfornolessthanoneyearafterthe granteehasterminatedallmarketingandimportationortheconclusionofanyCommissionrelated proceedinginvolvingtheequipment. FCCUSAGENT,LLCaccepts,asofthedateofthefilingoftheapplication,theobligationofthedesignated U.S.agentforserviceofprocessfortheabovereferencedFCCID. DesignatedU.S.AgentInformation:

CompanyName:FCCUSAgent,LLC FRN:0033402884 Address:3722IllinoisAvenue,SaintCharles,IL,60174,USA ContactPerson:TimPayne Phone:7085713148 Email:Support@FCCUSAgent.com FCCUSAGENT,LLC. TimPayne Sincerely, Wavecompany LTD. Mr Ji-Hun Han Rev 1/26/2023

Wavecompany LTD. DMC High-tech Industry Center #716, 330 Seongam-ro, Seoul, South Korea Tel: +82-10-2991-4171 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: November, 01, 2023 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2BCWF2CHESTIMMV2 Ji-Hun Han of Wavecompany LTD. certifies that the equipment for which authorization is sought is not covered equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, Research Engineer / Mr Ji-Hun Han Wavecompany LTD. Wavecompany LTD. DMC High-tech Industry Center #716, 330 Seongam-ro, Seoul, South Korea Tel: +82-10-2991-4171 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: November, 01, 2023 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2BCWF2CHESTIMMV2 Ji-Hun Han of Wavecompany LTD. certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as as a specifically named entity or any of its subsidiaries or affiliates Sincerely, Research Engineer / Mr Ji-Hun Han Wavecompany LTD.

Wavecompany LTD. DMC High-tech Industry Center #716, 330 Seongam-ro, Seoul, South Korea Tel: +82-10-2991-4171 Date: November 01, 2023 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID : 2BCWF2CHESTIMMV2 Pursuant to Sections 0.457 and 0.459 of the Commissions Rules, we hereby request confidential treatment of information accompanying this application as outlined below:

PERMANENT Exhibit Type Part List Schematics Diagram(s) Operation description Block diagram File Name Part List.pdf Schematic.pdf Operation description.pdf Block diagram.pdf And the above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Research Engineer / Mr Ji-Hun Han Wavecompany LTD.