FCC ID: 2AWA4CMA-1030 Mobile skin/hair/scalp analyzer

DEVICE DESCRIPTION TURN ON & OFF DEVICE 6. Attach the dpi Harris device on the metal guide of the metal guide of the smart phone ( or the phone cover ) cover ) mart phone ( or th 1 2 3 44 5 1. Charge device using USB charger, Charging time is 2 hours maximum. 2. To turn on the device, press the power switch of the dpi Harris device for 3 seconds until LED light blinks 3. To turn off the device, press the power switch for 3 seconds until LED light blinks 6 7 4. Put paper lm guide on your phone and attach the metal guide metal guide USING APP QUICK MANUAL Model Name: CMA-030-A 1. Moisture sensor 2. Magnetic attachment 3. Serial Number and Product ID 4. Micro USB port (Charging) 5. Non-removable lens 6. Power Switch (On/Off) 7. Light Indicator SPECIFICATIONS E-mail: chowis@chowis.com Skype ID: Hello Chowis Skype Magnication x30 Battery 250mAh Li-Polymer For more information visit us at www.chowis.com. Chowis Co., Ltd. Tel: +82 31 706 7950 / Fax: +82 31 272 7950 Address: A1301-2, 184, Jungbu-daero, Giheung-gu, Yongin-si, Gyeonggi-do, Republic of Korea, 17095 Product size 46 mm(width) 106 mm(height) 31 mm(depth) Product weight 75g - Device Only Analysis result Index per measurement (099) Measurement HAIR DENSITY SCALP SEBUM SCALP IMPURITIES SCALP HYDRATION DEAD SCALP CELL 5. Align the devices eyepiece to camera lens. USING APP HOW TO MEASURE HOW TO ANALYZE 1. At the Home Screen, tap Start button to open Analysis. DERMO PICO HAIR ANALYSIS 2. There are 2 choices; Customer and Quick Analysis. Customer - Adding new customer before analysis. 1. DermoPico Hair Measurements a. Total Program covers all measurements

- Scalp Hydration

- Scalp Sebum

- Hair Density

- Dead Skin Cells

- Scalp Impurities 1. Analyzing after all measurements a. Tap on every menu on tab to show measurements o e. b. On every tab analyze one by one. O e e y t a y e o e Quick Analysis - minor info needed then go to analyze. 3. How to Capture Images. a. Tap specic measurement on the screen b. Place handset on the head c. Make use lens touches the scalp of the head d. Press Capture button to take image, do not move the headset positions away from the head. NOTE: All measurements can have the same image taken. 2. Shows all results here a. Comparison, compare taken image with professional data set that includes different range of images. set that inc REGISTERING NEW CUSTOMER 1. Select Customer and tap on New Customer button. 2. Fill up required data on elds, all elds with asterisk *

3. Select the registered customer on the table and then are all important and must not be blank. Then press Save button. press Analysis button at the bottom. lt lt lt s sults sults sults 3. Full Results p p p a. Tap results button to show results b. Results of all measurements will be shown in the horizontal bar graph. c. In addition, users can check the results in pie chart on the next page. ll ll ll f f f Attach Metal Metal Guide to to the phone one Mount device ount device to the magnet the magnet INSTALLING THE DPI HAIR PICO APP 1. Open App Store/Play Store and search Chowis. 2. Select DermoPico Hair app and tap get to install. CONNECTING DEVICE TO PHONE 1. Turn on Bluetooth on your phone. 2. Open DermoPico Hair app. 3. Choose Product ID of device to connect via bluetooth. 4. Follow device initialization instructions, press start. NOTE: If connection was successful, Bluetooth indicator will change to blue, if not, it is grey. This device complies with part 15 of the FCC rules and RSS-247 of Industry Canada. Operation 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. is subject following the to NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modications this equipment. Such modications could void the users authority to operate the equipment. to NOTE: 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 try to correct the interference by one or more 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 that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help.

- This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter.

DEVICE DESCRIPTION TURN ON DEVICE USING APP 1. Charge device using USB charger, Charging time is 2 hours maximum. 2. Press switch button of the dpi Viso device for 3 seconds until LED light blinks. 2. Put paper guide on your phone and attach magnet on. INSTALLING THE DPIVISO PICO APP 1. Open App Store and type Chowis. or scan QR code:

2. Select DermoPico Skin app and install. 1 2 4 5 6 7 3 3 1. Moisture sensor 2. Magnetic attachment 3. Micro-USB B port 4. Serial Number SPECIFICATIONS 5. Non-removable lens 6. Switch On/Off 7. Light Indicator Magnication 10 Battery 250 Lithium-ionbattery Product size 106 mm 46 mm 37 mm Product weight 60 g Analysis result Measurement Index per measurement (099) hydration wrinkle pores impurities sebum QUICK MANUAL Model Name: CMA-010-A For more information visit us at www.chowis.com. Chowis Co., Ltd. Tel: +82 31 706 7950 / Fax: +82 31 272 7950 Address: A1301-2, 184, Jungbu-daero, Giheung-gu, Yongin-si, Gyeonggi-do, Republic of Korea, 17095 E-mail: chowis@chowis.com Skype ID: Hello Chowis Skype 3. Attach the dpiViso device on magnet. USING APP HOW TO MEASURE HOW TO ANALYZE DERMO PICO SKIN ANALYSIS 1. At the Home Screen, tap Start button to open Analysis. 2. There are 2 choices; Customer and Quick Analysis. Customer - Adding new customer before diagnosis. Quick Analysis - Directly go to diagnosis. CUSTOMER QUICK DIAGNOSIS START SETTINGS 1. Select Hydration on the app and place Moisture sensor on the forehead (T-zone) or the U-zone. HOW TO MEASURE HYDRATION 2. Place Moisture sensor on the T-zone or the U-zone. HOW TO ANALYZE HYDRATION 1. Dab end of the pink Sebum Indicator T-zone on the forehead and U-zone to the cheeck area for 3 seconds. 2. Select Sebum botton below and take an image of the Sebum Indicator, tap U-zone and T-zone for capturing. Make sure to include all pink areas on the capture. REGISTERING NEW CUSTOMER 1. Select Customer and tap on New Customer button. 2. Fill up required data on elds, all elds with asterisk *

are all important and must not be blank. Then press Save button. 3. Select the registered customer on the table and then press Analysis button at the bottom. HOW TO ANALYZE ANALYZING PORE, WRINKLE AND IMPURITIES 1. Tap specic icon on the app for analyzing, take image of the Pores, Wrinkles and Impurities RESULTS AFTER MEASUREMENTS 1. After all measurements, tap Results button below and app will show graph of all analysis results. 2. Slide left to see more of the result. 2 OR MORE ANALYSIS RESULTS 1. Open main screen page. 2. Press start, customer and choose customer name from list. 3. Click the round pink icon on the right to view analysis results save. 4. Select the dates you want to compare from. 5. Press compare button and view a linear graph of comparison and results. CONNECTING DEVICE TO PHONE 1. Turn on Bluetooth on your phone. 2. Open Dermo Pico app. 3. Choose MAC code of device to connect. 4. After connecting device, press start. 5. Select Quick Diagnosis for quick usage. NOTE: If connection was successful, Bluetooth indicator will change to pink if not it is grey. This device complies with part 15 of the FCC rules and RSS-247 of Industry Canada. Operation 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. is subject following the to NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modications this equipment. Such modications could void the users authority to operate the equipment. to NOTE: 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 try to correct the interference by one or more 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 that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help.

- This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter.

CHOWIS Co., Ltd. Date: 24 June, 2020 To:

Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 RE: CHOWIS Co., Ltd. FCC ID: 2AWA4CMA-1030 FCC Certification Confidentiality Request Gentlemen:

This letter is to comply with 47 CFR 0.457 and 0.459 pertaining to confidentiality material. CHOWIS Co., Ltd. requests that the following documents regarding this submission for FCC ID: 2AWA4CMA-

1030 be kept Long-Term confidential:

Exhibit Type Block Diagram Schematics Operational Description Operational Description.pdf File Name Block Diagram.pdf Schematics.pdf Those documents contain detailed system and equipment description and related information about the product which CHOWIS Co., Ltd. considers to be confidential proprietary, a custom design and, otherwise, not releasable to the general public. Since this design is a basis form which future technological products will evolve, CHOWIS Co., Ltd. considers this information would be of benefit to its competitors, and that the disclosure of the information in these documents would give competitors an unfair advantage in the market. Thank you for your attention to this matter. Yours Sincerely,

(signature) Print name: Choi Won Suk Title:CEO CHOWIS Co., Ltd.

CHOWIS Co., Ltd. Date: 24 June, 2020 To:

Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 To Whom It May Concern:

CHOWIS Co., Ltd., the undersigned, hereby authorizes Mr. Wu Xuewen from Shenzhen BALUN Technology Co., Ltd., to act on the behalf of the CHOWIS Co., Ltd. solely in matters relating to the application for an FCC equipment authorization for FCC ID: 2AWA4CMA-1030 including the signing of documents in connection with this Application. Necessary acts carried out by Shenzhen BALUN Technology Co., Ltd. in connection with the Application shall have the same effect as acts of CHOWIS Co., Ltd. CHOWIS Co., Ltd. also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. Section 862. Yours Sincerely,

(signature) Print name: Choi Won Suk Title:CEO CHOWIS Co., Ltd.