2ADM5-EP-0677S23 RUGGED ST TWS

Zeeva International Limited Suite 1007B, 10th Floor, Exchange Tower, 33 Wang Chiu Road, Kowloon Bay, Hong Kong Tel: +852-2868 0511 | Fax: +852-2524 1986 E-mail: [email protected] 12/14/2022 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Declaration letter We, Zeeva International Limited hereby declare that we have a product named as S23 RUGGED ST TWS (FCC ID:2ADM5-EP-0677; Model No.: EP-0677)was tested by Shenzhen Accurate Technology Co., Ltd ,which has left earbud and right earbud. we would like to declare that the product has two units which are electrically identical.We confirm that all information above is true, and we’ll be responsible for all the consequences. Please contact me if you have any question. Sincerely Yours, Signature: Printed Name: Akshay P Butani Title: Vice President

Zeeva International Limited Suite 1007B, 10th Floor, Exchange Tower, 33 Wang Chiu Road,Kowloon Bay, Hong Kong Tel: +852-2868 0511 | Fax: +852-2524 1986 E-mail: [email protected] Date: 12/14/2022 To: FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 We, Zeeva International Limited hereby declare that： Product Name: S23 RUGGED ST TWS Model No.: EP-0677 FCC ID: 2ADM5-EP-0677 For BT Mode: BLE 1M/2M ; are disable by software For Below are activated: Bluetooth BDR(GFSK) , EDR(π/4‐DQPSK), EDR(8DPSK) Except for the manufacturer, the end user does not have any capability to modify/change the RF parameters. We acknowledge that it is the manufacturer’s responsibility to provide the radio configurations to ensure compliance with Commission’s rules. Sincerely Yours, Signature: Printed Name: Akshay P Butani Tiltle: Vice President

APPLICATION DIAGRAM Bluetooth CPU Clock PLL26M Touch KEYDSP ENGINE PMU Memory DAC&PA ADC AB5616E 2402-2480MHz

Zeeva International Limited Suite 1007B, 10th Floor, Exchange Tower, 33 Wang Chiu Road,Kowloon Bay, Hong Kong Tel: +852-2868 0511 | Fax: +852-2524 1986 E-mail: [email protected] 12/14/2022 Product Similarity Declaration FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern, We, Zeeva International Limited hereby declare that we have a product named as S23 RUGGED ST TWS (Model No.:EP-0677) FCC ID: 2ADM5-EP-0677 was tested by Shenzhen Accurate Technology Co., Ltd, meanwhile, for our marketing purpose, we would like to list a series products on reports and certificate, all the Products are identical schematics, except for the difference of color appearance. No other changes are made to them. We confirm that all information above is true, and we’ll be responsible for all the consequences. Please contact me if you have any question. Sincerely Yours, Signature: Printed Name: Akshay P Butani Title: Vice President

Zeeva International Limited Suite 1007B, 10th Floor, Exchange Tower, 33 Wang Chiu Road, Kowloon Bay, Hong Kong Tel: +852-2868 0511 | Fax: +852-2524 1986 E-mail: [email protected] FCC ID Cover Letter Date:12/14/2022 The Zeeva International Limited here by submits justification for placing the FCC ID in the Associated User Manual and base charger. According to the FCC Regulation and Guidance (KDB Publication 784748 D01 v09r01) allows for the FCC ID to be moved to the User’s manual if the device is unquestionably too small for the FCC ID to be printed. Referring to the above quote, as the device is too small (FCC ID:2ADM5-EP-0677 ) to be printed. The FCC ID will be moved to the last page of user’s manual and charging case. The details are as below: A. Side surface (A): The curvatu re shape of the silicone sleeve back cover is not flat, so it’s hard to affix the label on the surface of the earbuds. B. Top cover (B): The plastic logo of the top cover does not provide enough physical space to fit the printing of the FCC ID according to below reference picture. C onclusion： Based on the above description of area A to B, we conclude that the device is unquestionably too samll for enabling the FCC ID to be printed onto any surface, We therefore request to move the FCC ID to the User manual and charging case Sincerely Yours, Signature: Printed Name: Akshay P Butani Title: Vice President

Shenzhen Accurate Technology Co., Ltd. Project No.: RA221110-53020E-RF External Photos Page 1 of 6 External Photos Shenzhen Accurate Technology Co., Ltd. Project No.: RA221110-53020E-RF External Photos Page 2 of 6 Shenzhen Accurate Technology Co., Ltd. Project No.: RA221110-53020E-RF External Photos Page 3 of 6 Shenzhen Accurate Technology Co., Ltd. Project No.: RA221110-53020E-RF External Photos Page 4 of 6 Shenzhen Accurate Technology Co., Ltd. Project No.: RA221110-53020E-RF External Photos Page 5 of 6 Shenzhen Accurate Technology Co., Ltd. Project No.: RA221110-53020E-RF External Photos Page 6 of 6

Shenzhen Accurate Technology Co., Ltd. Project No.: RA221110-53020E-RF LABEL AND LOCATION Page 1 of 1 FCC ID Label FCC ID Label Location Information The label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time purchase (Labeling requirements per 2.925)

Shenzhen Accurate Technology Co., Ltd. Project No.: RA221110-53020E-RF Internal Photos Page 1 of 3 Internal Photos Shenzhen Accurate Technology Co., Ltd. Project No.: RA221110-53020E-RF Internal Photos Page 2 of 3 Shenzhen Accurate Technology Co., Ltd. Project No.: RA221110-53020E-RF Internal Photos Page 3 of 3 BT Antenna

AB5616E 26MHz CircuitDescription 1.Battery(3.7V)providesenergyfortheBluetoothchip( ) ;Crystal oscillator()providestheclocksignalfortheBluetoothchip.Bluetoothsignals getthroughamatchingcircuit,andthentransmittedtothespacethroughthe antenna（2402MHz‐2480MHz）.Whentheproductisconnected,theproductcanbe intwo‐waycommunicationwithotherBluetoothdevices,andthenthedevice's BluetoothmodulesendsBluetoothsignalsintospace,theproductreceivesthe Bluetoothsignalthroughanantenna,transmissiontotheBluetoothchipvia matchingcircuit.

Shenzhen Accurate Technology Co., Ltd. Report No.: RA221110-53020E-RF Version 11: 2021-11-09 Page 10 of 60 FCC-BT FCC§15.247 (i), §1.1307 (b) – RF EXPOSURE Applicable Standard According to FCC §2.1093 and §1.1307(b), systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission’s guideline. According to KDB 447498 D04 Interim General RF Exposure Guidance v01, clause 2.1.3.1-SAR-Based Exemption: A more comprehensive exemption, considering a variable power threshold that depends on both the separation distance and power, is provided in § 1.1307(b)(3)(i)(B). This exemption is applicable to the frequency range between 300 MHz and 6 GHz, with test separation distances between 0.5 cm and 40 cm, and for all RF sources in fixed, mobile, and portable device exposure conditions. Accordingly, a RF source is considered an RF exempt device if its available maximum time-averaged (matched conducted) power or its effective radiated power (ERP), whichever is greater, are below a specified threshold. This exemption threshold was derived based on general population 1-g SAR requirements and is detailed in Appendix C. Test Result For worst case: Mode Frequency Maximum Tu n e-up Conducted Power Antenna Gain ERP ERP 20cm Distance SAR-Based Exclusion Threshold SAR-Based Exclusion (MHz) (dBm) (dBi) (dBd) (dBm) (mW) (mm) (mW) (dBm) BDR/EDR 2402-2480 3.5 2.06 -0.09 3.41 3060 5 2.717 4.34 Yes Note 1: The tune-up power was declared by the applicant. Note 2: 0dBd=2.15dBi. Result: Compliant.

CHARGING BATUP MIC TOUCH LED AUDIO BT L 3 0.5P L 4 NC L2 0R Y1 26MHZ LED2 RED_LED LED1 BLUE_LED BT1 V UP VBAT GND 1 GND 2 5V B- B+ 1 0 V D D B T 7 V D D B T 8 P W R K E Y 5 LX 6 D G N D 4 VBAT 2 VUSB 1 8 D A C L 1 6 A D C 1 0 / M I C / P F 2 11 BT_OSCI 12 BT_OSCO 9 B T _ A N T 3 VDDIO 1 9 V D D D A C 1 AGND 0 RFGND 1 7 V C M B U F 2 0 V D D P A 13 ADC6/PB4 14 ADC5/PB3 15 ADC2/PA7 U1 AB5616E ANT1 3216F245C03 L+ L- L6 10R C8 NC L7 10R C9 NC C13 104 2 1 MIC1 R5 6K8 R1 2R2 L8 NC C2105 T1 L5 1.5NH VDDIO VBAT VUSB CHRG_LED BLUE_LED/UPDATE V B A T VBAT GND BLUE_LED/UPDATE OSCO B T _ R F P W R K E Y V D D B T OSCI BLUE_LED/UPDATE CHRG_LED D A C L # D A C L M I C I N DACL DACL# VDDDAC MICIN VUSB V D D D A C PWRKEY 3.7

Note: This report may contain data that are not covered by the A2LA accreditation and are marked with an asterisk “★”. Shenzhen Accurate Technology Co., Ltd. is not responsible for the authenticity of any test data provided by the applicant. Data included from the applicant that may affect test results are marked with an asterisk ’*’. Customer model name, addresses, names, trademarks etc. are not considered data. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. Shenzhen Accurate Technology Co., Ltd. 1/F., Building A, Changyuan New Material Port, Science & Industry Park, Nanshan District, Shenzhen, Guangdong, P.R. China Tel: +86 755-26503290 Fax: +86 755-26503396 Web: www.atc-lab.com Version 11: 2021-11-09 Page 1 of 60 FCC-BT TEST REPORT Applicant Name : Zeeva International Limited Address : Suite 1007B, 10th Floor, Exchange Tower, 33 Wang Chiu Road, Kowloon Bay, Hong Kong Report Number : RA221110-53020E-RF FCC ID: 2ADM5-EP-0677 Test Standard (s) FCC PART 15.247 Sample Description Product Type: S23 RUGGED ST TWS Test Model: EP-0677 Trade Mark: Date Received: 2022-11-10 Date of Test: 2022-11-16 to 2022-11-17 Report Date: 2022-11-20 Test Result: Pass* * In the configuration tested, the EUT complied with the standards above. Prepared and Checked By: Approved By: Roger.Ling Candy Li EMC Engineer EMC Engineer Shenzhen Accurate Technology Co., Ltd. Report No.: RA221110-53020E-RF Version 11: 2021-11-09 Page 2 of 60 FCC-BT TABLE OF CONTENTS GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 OBJECTIVE ................................................................................................................................................................... 4 TEST METHODOLOGY .................................................................................................................................................. 4 MEASUREMENT UNCERTAINTY .................................................................................................................................... 5 TEST FACILITY ............................................................................................................................................................. 5 SYSTEM TEST CONFIGURATION .......................................................................................................................... 6 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 6 EUT EXERCISE SOFTWARE .......................................................................................................................................... 6 SPECIAL ACCESSORIES ................................................................................................................................................. 6 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 6 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 6 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 7 SUMMARY OF TEST RESULTS ............................................................................................................................... 8 TEST EQUIPMENT LIST ........................................................................................................................................... 9 FCC§15.247 (i), §1.1307 (b) – RF EXPOSURE ......................................................................................................... 10 APPLICABLE STANDARD ............................................................................................................................................ 10 TEST RESULT ............................................................................................................................................................. 10 FCC §15.203 – ANTENNA REQUIREMENT .......................................................................................................... 11 APPLICABLE STANDARD ............................................................................................................................................ 11 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 11 FCC §15.205, §15.209 & §15.247(d) – RADIATED EMISSIONS ........................................................................... 12 APPLICABLE STANDARD ............................................................................................................................................ 12 EUT SETUP ................................................................................................................................................................ 12 EMI TEST RECEIVER & SPECTRUM ANALYZER SETUP .............................................................................................. 13 TEST PROCEDURE ...................................................................................................................................................... 13 FACTOR & MARGIN CALCULATION ...............................................................................................…

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Model： Manufacture：Shenzhen Bluetrum Technology Co., Ltd 3216 Address： Building A, Wisdom Plaza, o.4068 Qiaoxiang Road, Gaofa Community Shahe Street Nanshan Application Information O4Version5.245.351 TotalTime4m 17s 934ms AdditionalInfor NULL FreqEffiEffiGainGainUHISDHISMaxMinDirectivity Beamwidth AttHAttV (MHz)(%)(dB)(dBi)(dBd)(%)(%)(dB)(dB)(dBi)(3dB)(dB)(dB) 240039.04-4.090.52-1.63000.52 -15.744.096047.3646.86 241039.11-4.080.73-1.42000.73 -16.624.086047.446.9 242035.33-4.520.47-1.68000.47 -17.324.526047.2846.76 243039.98-3.981.14-1.01001.14 -17.193.983047.3546.78 244037.5-4.260.98-1.17000.98 -17.754.263047.1546.65 245044.14-3.551.69-0.46001.69 -17.333.553047.3346.85 246039.63-4.021.17-0.98001.17 -18.044.026047.7247.22 247038.25-4.170.95-1.2000.95 -18.884.176047.3646.93 248049.71-3.042.06-0.09002.06 -18.643.046047.5647.1 249041.14-3.861.2-0.95001.2 -19.363.866047.0546.67 250043.15-3.651.32-0.83001.32 -19.073.656047.0146.63 Community, Shahe Street, Nanshan District, Shenzhen，China Passive Test For BT2.4

Shenzhen Accurate Technology Co., Ltd. Project No.: RA221110-53020E-RF Test Photos Page 1 of 1 Radiated Spurious Emissions Test View (Below 1GHz) Radiated Spurious Emissions Test View (Above 1GHz)