2AKZ8-TWS023TRUE WIRELESS EARBUDS

DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD Add: 2A No.60 Lizhong Road Dali Qingxi Town, DONGGUAN, China Tel：8676982852599 E-mail：[email protected] 2023/6/29 Declaration FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 To whom it may concern: Our product TRUE WIRELESS EARBUDS, Model number: TWS023, PATW-1024-BK, PATW-1024-WH, PATW-1024-BL, PATW-1024-GN, PATW-1024-PRPATW-1025-PK, PATW-1025-PR, PATW-1025-BL, PATW-1025-WH, PATW-1025-TL, FCC ID: 2AKZ8-TWS023, is a twins earbud that has a left earbud and a right earbud. We would like to declare that the left earbud and right earbud 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, Signature: Printed Name: Sally Yang Title: Manager

DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD Add: 2A No.60 Lizhong Road Dali Qingxi Town, DONGGUAN, China Tel：8676982852599 E-mail：[email protected] Date: 6/29/2023 To: FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 We, DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD hereby declare that： Product Name: TRUE WIRELESS EARBUDS Model NO: TWS023, PATW-1024-BK, PATW-1024-WH, PATW-1024-BL, PATW- 1024-GN, PATW-1024-PRPATW-1025-PK, PATW-1025-PR, PATW-1025-BL, PATW- 1025-WH, PATW-1025-TL FCC ID: 2AKZ8-TWS023 For BT Mode: BLE 1M, 2M are disable by software For Below are activated: Bluetooth EDR(π/4-DQPSK), BDR(GFSK) 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: Sally Yang Title: Manager

DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD Add: 2A No.60 Lizhong Road Dali Qingxi Town, DONGGUAN, China ： Tel 8676982852599 E- ： mail [email protected] CFR 47 §2.911(d)(5)(i) Attestation Letter QA-FR-1006-A RC 02-08-2023 Attestation Letter Date: 06/29/2023 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(i) Filing FCC ID: 2AKZ8-TWS023 DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD (“the applicant”) 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, Signature: Printed Name: Sally Yang Title: Manager

DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD Add: 2A No.60 Lizhong Road Dali Qingxi Town, DONGGUAN, China ： Tel 8676982852599 E- ： mail [email protected] CFR 47 §2.911 (d)(5)(ii) Attestation Letter QA-FR-1007-A RC 02-08-2023 Attestation Letter Date: 06/29/2023 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(ii) Filing FCC ID: 2AKZ8-TWS023 DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD (“the applicant”) 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. Sincerely, Signature: Printed Name: Sally Yang Title: Manager

FCC ID: 2AKZ8-TWS023

2.402GHz-2.480GHz DC 5V Buck system battery Voltage protection system Charging light Power on indicator antenna microphone Audio output key 24MHz AD697023D0

DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD Add: 2A No.60 Lizhong Road Dali Qingxi Town, DONGGUAN, China Tel：8676982852599 E-mail：[email protected] FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: 2023/06/29 Product Similarity Declaration To Whom It May Concern, We, DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD hereby declare that we have a product named as TRUE WIRELESS EARBUDS,(Model No: TWS023, FCC ID: 2AKZ8-TWS023) was tested by Shenzhen Accurate Technology Co.,Ltd, meanwhile, for our marketing purpose, we would like to list a series model No.( PATW-1024-BK, PATW-1024-WH, PATW-1024-BL, PATW-1024-GN, PATW-1024-PRPATW- 1025-PK, PATW-1025-PR, PATW-1025-BL, PATW-1025-WH, PATW-1025-TL) on reports and certificate, all the models are identical in electrically, except different color and model no., And 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, Signature: Printed Name: Sally Yang Title: Manager

DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD Add: 2A No.60 Lizhong Road Dali Qingxi Town, DONGGUAN, China Tel：8676982852599 E-mail：[email protected] 2023/6/29 FCC certification No. Cover Letter We, DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD, hereby submit justification for placing the FCC certification No. in the associated user’s manual and charging case. According to the FCC regulation, the FCC certification No. should be printed on the earbuds, but as the earbuds are too small to print the label (FCC ID: 2AKZ8-TWS023), it will be moved to the user manual and charging case. The details are as below: A. Side surface (A): The side surface does not provide enough physical space to fit the printing of the FCC certification No. according to below reference picture. B. Top cover (B): The top cover does not provide enough physical space to fit the printing of the FCC certification No. according to below reference picture. Conclusion: Based on the above description of area A to B, we conclude that the device is unquestionably too small for enabling the FCC certification No. to be printed onto any surface. We therefore request to move the FCC certification No. to the user’s manual and charging case. A B Label and label location: Best regards, Signature: Printed Name: Sally Yang Title: Manager

Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-RF External Photos Page 1 of 9 External Photos Left Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-RF External Photos Page 2 of 9 Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-RF External Photos Page 3 of 9 Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-RF External Photos Page 4 of 9 Right Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-RF External Photos Page 5 of 9 Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-RF External Photos Page 6 of 9 Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-RF External Photos Page 7 of 9 Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-RF External Photos Page 8 of 9 Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-RF External Photos Page 9 of 9

Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-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) Model No.:TWS023

Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-RF Internal Photos Page 1 of 7 Internal photos Left Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-RF Internal Photos Page 2 of 7 ANT Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-RF Internal Photos Page 3 of 7 Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-RF Internal Photos Page 4 of 7 Right Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-RF Internal Photos Page 5 of 7 Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-RF Internal Photos Page 6 of 7 Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-RF Internal Photos Page 7 of 7 ANT

1. Charge management: 5V DC voltage from 5 V + 5 V - tail plug, through the main control AD697023D0 pin 7 input, internal drop After pressing and stabilizing the voltage, output 4.2 V voltage through pin 6 of AD697023D0 to charge the lithium battery, and the lithium battery passes through AD697023D0 The 6-pin position of P6 supplies power to the main control AD697023D0. 2. The Bluetooth module receives and transmits RF signals through the main control AD697023D0 1 pin antenna to match with other Bluetooth devices For use, Bluetooth receives audio output to the load horn via the master AD697023D0 pin 1 8 and pin 1 9 (differential),Make a sound. Crystal oscillator is 24MHz Frequency Range: 2402~2480MHz

Shenzhen Accurate Technology Co., Ltd. Report No.: RA230608-32658E-RF-00 Version 7: 2023-1-30 Page 11 of 54 FCC-BT FCC§15.247 (i), §1.1307 (b) (3) &§2.1093 – RF EXPOSURE Applicable Standard According to FCC §2.1093 and §1.1307(b) (1), 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 D01 General RF Exposure Guidance The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where 1. f(GHz) is the RF channel transmit frequency in GHz. 2. Power and distance are rounded to the nearest mW and mm before calculation. 3. The result is rounded to one decimal place for comparison. 4. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test Exclusion. Measurement Result For worst case: Mode Frequency (MHz) Max tune-up conducted power* (dBm) Max tune-up conducted power* (mW) Distance (mm) Calculated value Threshold (1-g SAR) SAR Test Exclusion BT 2402-2480 2.0 1.58 5 0.5 3.0 Yes Result: Compliant.

1 1 2 2 3 3 4 4 DD CC BB AA AGND GND GND SW BT AVDD GND GND VBATDC5VBT AVDDP/P/POWER BT RF GND DP DM BT OSCO BT OSCI AGND VCOM DACLDACR MICMIC BLAS LED B/R +3.3V VCOM 1 VDDIO 2 PB8/PB6/ADC9 3 PGND 4 SW 5 VBAT 6 LDO_IN 7 BT_AVDD 8 PB2/ADC7/LP_TH1 9 PB1/ADC6/LP_TH0 10 BT_RF 11 BT_OSCI 12 BT_OSCO 13 PC2/USBDM 14 PC0/USBDP 15 MIC0/PA1 16 MIC_LDO 17 DACR 18 DACL 19 DACVSS 20 GND 0 U1 C5 105 C6 105 C7 106 C4 105 C9 105 12 L1 10uH MIC AGND E1 BT-BT GND GND + 1 - 2 MIC1 MIC C1 2P C11 1P5 C2 0.8nH C10 NC P1 P P2 P VBAT GND AGND P7 P VBAT VBAT- GND AGND R2 100R VDD VSS VM U2 SW1828A P3 P P4 P DACL DACR GND 3 P 4 P P5 P DC5V GND 5 P 2 P P6 P E2 NC P/P/POWER GND C8 NC K1 P +3.3V GND LED B/R LED1 B LED2 R GND GND BT OSCIBT OSCO12 3 4 Y1 24M DP P DM P 2.441GHz(2.402GHz-2.480GHz)

DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD Add: 2A No.60 Lizhong Road Dali Qingxi Town, DONGGUAN, China Model: 2.4G ANT Frequency Range: 2402-2480MHz Antenna Gain: -0.85 dBi

Note: This report may contain data that are not covered by t ★ he 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: +86 755-26503290 Web: www.atc-lab.com Version 7: 2023-1-30 Page 1 of 54 FCC-BT TEST REPORT Applicant Name : DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD Address : 2A No.60 Lizhong Road Dali Qingxi Town DONGGUAN China 523648 Report Number : RA230608-32658E-RF-00 FCC ID: 2AKZ8-TWS023 Test Standard (s) FCC PART 15.247 Sample Description Product Type: TRUE WIRELESS EARBUDS Model No.: TWS023 Multiple Model(s) No.: PATW-1024-BK\PATW-1024-WH\PATW-1024-BL\ PATW-1024-GN\PATW-1024-PR\PATW-1025-PK\ PATW-1025-PR\PATW-1025-BL\PATW-1025-WH\ PATW-1025-TL Trade Mark: Prime Audio Date Received: 2023/06/08 Report Date: 2023/06/20 Test Result: Pass* * In the configuration tested, the EUT complied with the standards above. Prepared and Checked By: Approved By: Dave Liang Candy Li EMC Engineer EMC Engineer Shenzhen Accurate Technology Co., Ltd. Report No.: RA230608-32658E-RF-00 Version 7: 2023-1-30 Page 2 of 54 FCC-BT TABLE OF CONTENTS DOCUMENT REVISION HISTORY ......................................................................................................................... 4 GENERAL INFORMATION ....................................................................................................................................... 5 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 5 OBJECTIVE ................................................................................................................................................................... 5 TEST METHODOLOGY .................................................................................................................................................. 5 MEASUREMENT UNCERTAINTY .................................................................................................................................... 6 TEST FACILITY ............................................................................................................................................................. 6 SYSTEM TEST CONFIGURATION .......................................................................................................................... 7 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 7 EUT EXERCISE SOFTWARE .......................................................................................................................................... 7 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 7 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 7 EXTERNAL I/O CABLE .................................................................................................................................................. 7 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 8 SUMMARY OF TEST RESULTS ............................................................................................................................... 9 TEST EQUIPMENT LIST ......................................................................................................................................... 10 FCC§15.247 (I), §1.1307 (B) (3) &§2.1093 – RF EXPOSURE ..................................................................................... 11 APPLICABLE STANDARD ............................................................................................................................................ 11 FCC §15.203 – ANTENNA REQUIREMENT .......................................................................................................... 12 APPLICABLE STANDARD ............................................................................................................................................ 12 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 12 FCC §15.205, §15.209 & §15.247(D) – RADIATED EMISSIONS .......................................................................... 13 APPLICABLE STANDARD ............................................................................................................................................ 13 EUT SETUP ................................................................................................................................................................ 13 EMI TEST RECEIVER & SPECTRUM ANALYZER SETUP .............................................................................................. 14 TEST PROCEDURE ...................................................................................................................................................... 14 FACTOR & MARGIN CALCULATIO…

Text truncated - open the document above for the full version.

Shenzhen Accurate Technology Co., Ltd. Project No.: RA230608-32658E-RF Test Photos Page 1 of 1 Photo of Radiated Emission Measurement (Below 1G) Photo of Radiated Emission Measurement (Above 1G)