FCC ID: 2A88Y-EP059 Wireless Earbuds

FCC Requirement Any changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. 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. 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.

Shenzhen Pengbian Industrial Technology Co., LTD Room 605, Building 4, 1970 Science Park, Minzhi Community, Minzhi Street, Longhua District, Shenzhen SPECIFICATIONS

CUSTOMER:

DESCRIPTION:

CUSTOMER PART No:

OUR MODEL NO:

DATE:

/Bluetooth antenna PBX3216MC02 2020/12/22

, PLEASE RETURN TO US ONE COPY OF SPECIFICATION FOR APPROVAL WITH YOUR APPROVED SIGNATURES X.X UNLESS OTHER SPECIFIED TOLERANCES ON X A N G L E S SCALEN/A DRAWN BY : Sera H O L E D I A UNITmm CHECKED BY: XD X.XX DESIGNED BY: Sera APPROVED BY: XD TITLECHIP2450-3216 Specification Shenzhen Pengbian Industrial Technology Co., LTD THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF PBXY TECHNOLOGY Limited AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. 3216 SPEC REV. P1 Shenzhen Pengbian Industrial Technology Co., LTD PBX3216MC02 Specification Operating Temp. : -40~+85 1. FEATURES:

Light weight, compact Wide bandwidth, low cost Built-in antenna with high gain 2. APPLICATIONS:

Bluetooth, Wireless LAN, Mobile TV Home RF System, etc 3. PRODUCT IDENTIFICATION C H I P 2 4 5 0 3 2 1 6

(1)

(2)

(3)

(1) Product type: Multilayer chip Antenna

(2) Center Frequency: 2450MHz

(3) External Dimensions (LW) (mm): 3.2*1.6 4. SHAPE AND DIMENSIONS:

L W H A 3.20.2 1.60.2 0.520.1 0.40.1 X.X UNLESS OTHER SPECIFIED TOLERANCES ON X A N G L E S SCALEN/A DRAWN BY : Sera H O L E D I A UNITmm CHECKED BY: XD X.XX DESIGNED BY: Sera APPROVED BY: XD TITLECHIP2450-3216 Specification Shenzhen Pengbian Industrial Technology Co., LTD THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF PBXY TECHNOLOGY Limited AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. 3216 SPEC REV. P1 Shenzhen Pengbian Industrial Technology Co., LTD

/Test board reference dimensions mm antenna Bottom copper Top copper X.X UNLESS OTHER SPECIFIED TOLERANCES ON X A N G L E S SCALEN/A DRAWN BY : Sera H O L E D I A UNITmm CHECKED BY: XD X.XX DESIGNED BY: Sera APPROVED BY: XD TITLECHIP2450-3216 Specification Shenzhen Pengbian Industrial Technology Co., LTD THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF PBXY TECHNOLOGY Limited AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. 3216 SPEC REV. P1 Shenzhen Pengbian Industrial Technology Co., LTD Punching reference diagram Antenna Bottom copper Top copper punching APPLICATION GUIDE 5. SPECIFICATIONS:

antenna type Chip antenna

* Test condition: Test board size 90*40 mm Matching circuit: Pi matching circuit will be required X.X UNLESS OTHER SPECIFIED TOLERANCES ON X A N G L E S SCALEN/A DRAWN BY : Sera H O L E D I A UNITmm CHECKED BY: XD X.XX DESIGNED BY: Sera APPROVED BY: XD TITLECHIP2450-3216 Specification Shenzhen Pengbian Industrial Technology Co., LTD THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF PBXY TECHNOLOGY Limited AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. 3216 SPEC REV. P1 Shenzhen Pengbian Industrial Technology Co., LTD 6. Electrical Characteristics :

Mark 1 2 3 Frequency 2400 MHz 2440 MHz 2480 MHz VSWR 1.513 1.068 1.464 X.X UNLESS OTHER SPECIFIED TOLERANCES ON X A N G L E S SCALEN/A DRAWN BY : Sera H O L E D I A UNITmm CHECKED BY: XD X.XX DESIGNED BY: Sera APPROVED BY: XD TITLECHIP2450-3216 Specification Shenzhen Pengbian Industrial Technology Co., LTD THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF PBXY TECHNOLOGY Limited AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. 3216 SPEC REV. P1 Shenzhen Pengbian Industrial Technology Co., LTD Radiation Pattern The Gain pattern is measured in FAR-field chamber. DUT is placed on the table of rotator,a standard horn antenna and Vector Network Analyzer is used to collect data. X.X UNLESS OTHER SPECIFIED TOLERANCES ON X A N G L E S SCALEN/A DRAWN BY : Sera H O L E D I A UNITmm CHECKED BY: XD X.XX DESIGNED BY: Sera APPROVED BY: XD TITLECHIP2450-3216 Specification Shenzhen Pengbian Industrial Technology Co., LTD THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF PBXY TECHNOLOGY Limited AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. 3216 SPEC REV. P1 Shenzhen Pengbian Industrial Technology Co., LTD 3D Gain Pattern (2400 MHz) 3D Gain Pattern (2440 MHz) 3D Gain Pattern (2480 MHz) X.X UNLESS OTHER SPECIFIED TOLERANCES ON X A N G L E S SCALEN/A DRAWN BY : Sera H O L E D I A UNITmm CHECKED BY: XD X.XX DESIGNED BY: Sera APPROVED BY: XD TITLECHIP2450-3216 Specification Shenzhen Pengbian Industrial Technology Co., LTD THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF PBXY TECHNOLOGY Limited AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. 3216 SPEC REV. P1 Shenzhen Pengbian Industrial Technology Co., LTD 7. Environmental Characteristics

(1) Reliability Test

(2) Storage Condition

(a) At warehouse:

The temperature should be within 0 ~ 30 and humidity should be less than 60% RH. The product should be used within 1 year from the time of delivery.

(b) On board:

The temperature should be within -40~85 and humidity should be less than 85% RH.

(3) Operating Temperature Range Operating temperature range : -40 to +105. X.X UNLESS OTHER SPECIFIED TOLERANCES ON X A N G L E S SCALEN/A DRAWN BY : Sera H O L E D I A UNITmm CHECKED BY: XD X.XX DESIGNED BY: Sera APPROVED BY: XD TITLECHIP2450-3216 Specification Shenzhen Pengbian Industrial Technology Co., LTD THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF PBXY TECHNOLOGY Limited AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. 3216 SPEC REV. P1 Shenzhen Pengbian Industrial Technology Co., LTD 8. Recommended Reflow Soldering

(1) Soldering Gun Procedure Note the follows, in case of using solder gun for replacement.

(a) The tip temperature must be less than 350C for the period within 3 seconds by using soldering gun under 30 W.

(b) The soldering gun tip shall not touch this product directly.

(2) Soldering Volume Note that excess of soldering volume will easily get crack the body of this product. X.X UNLESS OTHER SPECIFIED TOLERANCES ON X A N G L E S SCALEN/A DRAWN BY : Sera H O L E D I A UNITmm CHECKED BY: XD X.XX DESIGNED BY: Sera APPROVED BY: XD TITLECHIP2450-3216 Specification Shenzhen Pengbian Industrial Technology Co., LTD THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF PBXY TECHNOLOGY Limited AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. 3216 SPEC REV. P1 Shenzhen Pengbian Industrial Technology Co., LTD 9. Taping Package and Label Marking: (unit: mm)

(1) Quantity/Reel: 5000pcs/Reel

(2) Carrier tape dimensions

(3) Taping reel dimensions X.X UNLESS OTHER SPECIFIED TOLERANCES ON X A N G L E S SCALEN/A DRAWN BY : Sera H O L E D I A UNITmm CHECKED BY: XD X.XX DESIGNED BY: Sera APPROVED BY: XD TITLECHIP2450-3216 Specification Shenzhen Pengbian Industrial Technology Co., LTD THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF PBXY TECHNOLOGY Limited AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. 3216 SPEC REV. P1

SHEN ZHEN VIMAI TECHNOLOGY CO.,LTD Date: December 12, 2023 Product Model Number: EP059 FCC ID2A88Y-EP059 To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following:

Testing Approval applications and procedures We declare that ORGANIZATION. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by ORGANIZATION. on our behalf shall have the same effect as acts of our own. By:

Contact Listed on FCC Wesbite Title: Manager Email: 3356403002@qq.com Telephone: 15521934892 On behalf of: SHEN ZHEN VIMAI TECHNOLOGY CO.,LTD Effective Date: April 2, 2020 Revision Date:

QSF 7.6.4-8 Agent Authorization Letter Template Revision: 0 Page 1 of 1

SHEN ZHEN VIMAI TECHNOLOGY CO.,LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject; Request for Confidentiality FCC ID: 2A88Y-EP059 To Whom It May Concern, Date: December 12, 2023 Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s);

External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature:

Name:Xie zexuan Title:Manager

SHEN ZHEN VIMAI TECHNOLOGY CO.,LTD Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: December 12, 2023 FCC ID: 2A88Y-EP059 Ref. #1: Attestation Statements Part 2.911(d)(5)(i) Filing SHEN ZHEN VIMAI TECHNOLOGY CO.,LTDcertifies 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. Ref. #2: Attestation Statements Part 2.911(d)(5)(ii) Filing SHEN ZHEN VIMAI TECHNOLOGY CO.,LTD certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing covered equipment. Applicant: SHEN ZHEN VIMAI TECHNOLOGY CO.,LTD Address: Floor 3, building B, no. 5 huating road, tongsheng community, dalang street, longhua district, shenzhen,China Contact Person: Xie zexuan Tel.: 15521934892 Email: 3356403002@qq.com Sincerely, Signature:

SHEN ZHEN VIMAI TECHNOLOGY CO.,LTD AddressFloor 3, building B, no. 5 huating road, tongsheng community, dalang street, longhua district, shenzhen,China FRN:0033055526 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements Part 2.911(d)(7) Filing SUBJECT: FCC Application for FCC ID: 2A88Y-EP059 SHEN ZHEN VIMAI TECHNOLOGY CO.,LTD. certifies that, as of the date of the filing of the application, Cleveland International Trade Agency . is our designated U.S. agent for service of process for the above referenced FCC ID. SHEN ZHEN VIMAI TECHNOLOGY CO.,LTD accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Cleveland International Trade Agency accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information:

Name: Cleveland International Trade Agency Address: 4033 St Clair Ave, Cleveland, OH 44103, USA Contact Person: Becky Deng Tel.: 216-600-0606 Email: Georgewu7012@gmail.com FRN:0033401837 Sincerely, Signed on behalf of SHEN ZHEN VIMAI TECHNOLOGY CO.,LTD Signed on behalf of Cleveland International Trade Agency Signature Name: Xie zexuan Signature Name:Becky Deng Title: Manager Title: Manager Date: December 12, 2023 Date: December 12, 2023