2AKZ8-TWS108TRUE WIRELESS EARBUDS

BLOCKDIAGRAM SPEAKER ANT 2402MHZ-2480MHZ XTAL 24MHZ OSCILLATOR DAC AC7023D MIC BAT DC 3.7V

China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-EXP EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS Page 1 of 12 China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-EXP Page 2 of 12 China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-EXP Page 3 of 12 China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-EXP Page 4 of 12 China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-EXP Page 5 of 12 China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-EXP Page 6 of 12 Ri g ht Ri g h t Ri g ht China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-EXP Page 7 of 12 China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-EXP Page 8 of 12 China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-EXP Page 9 of 12 Left Left Left China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-EXP Page 10 of 12 China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-EXP Page 11 of 12 China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-EXP Page 12 of 12

FCC ID:2AKZ8-TWS108

China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-INP EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS Page 1 of 8 Right Left China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-INP Page 2 of 8 China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-INP Page 3 of 8 China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-INP Page 4 of 8 Antenna Antenna China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-INP Page 5 of 8 China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-INP Page 6 of 8 China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-INP Page 7 of 8 China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-INP Page 8 of 8

Circuit Description The 24MHz crystal oscillator drives the base of C21. The modulation provided by AC7023D(C19). The output of AC7023D module has the matching network consisting of C1 and C5 and C6 that limit the harmonic content and effect the proper coupling of the antenna to the output stage. Antenna, Ground and Power Source The antenna consists of a 2.4GHz Single dipole antenna PCB antenna There is no external ground connection. The ground is only that of the printed circuit board. Electric current is supplied by a 3.7 Volt primary battery Feature: Frequency Range: 2402MHz-2480MHz Modulation Type: GFSK, π/4-DQPSK Crystal: 24MHz

China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-00 Page 47 of 49 5. RF EXPOSURE EVALUATION 5.1 Applicable Standard According to§15.247(i) and §1.1310, 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 KDB447498 D01 General RF Exposure Guidance v06: 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 • f(GHz) is the RF channel transmit frequency in GHz • Power and distance are rounded to the nearest mW and mm before calculation • The result is rounded to one decimal place for comparison • 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 5) in section 4.1 is applied to determine SAR test exclusion. 5.2 Measurement Result The max conducted power including tune-up tolerance is 1.0dBm (3.16mW). [(max. power of channel, mW)/(min. test separation distance, mm)][√f(GHz)] =1.26/5*(√2.480) = 0.4< 3.0 Result: Compliant. The stand-alone SAR evaluation is not necessary.

B 11 REV: SIZE: CODE: DRAWN: DATED: DATED: CHECKED:QUALITY CONTROL: DATED: DATED: RELEASED: COMPANY:TITLE: DRAWING NO: SHEET: OF SCALE: REVISION RECORD APPROVED: ECO NO: ABD DATE: 1 2 3 4 5 6 DCAB C LTR BLUE TOOTH MCU DC/DC 1243 C21 C6 0.7PF C9 105/16V C4 105/16V 1 DM 1 DP C2 100PF C5 1PF C8 105 1 VCOM 2 VDDIO 3 PB8/PB6/ADC9 4 PGND 5 SW 6 VBAT 7 LDO_IN 8 BT_AVDD 9 PB2/ADC7/LP_TH1 10 PB1/ADC6/LP_TH0 11 BT_RF 12 BT_OSCI 13 BT_OSCO 14 PC2/USBDM 15 PC0/USBDP 16 MIC0/PA1 17 MIC_LDO 18 DACR 19 DACL 20 DACVSS 0 GND C19 C13 106/16V C22 10UH/150MA C12 105/16V 1 R- 1 R+ 1 V+ 1 V- 1 TP1 C1 1NH 21 C18 RED 1 2 3 C16 21 C17 WHITE 1 OUTPUT 2 GND MIC1 C10 NC 1 B+ 1 B- C7 104 C3 NC 1 VM 2 VDD 3 GND C20 GND GND OSC24MI OSC24MO BT-ANT-IC BT-ANT BT-ANT GND DMDP VCOM DC+5V BAT+3V7 WKUP DPOSC24MIOSC24MO 3V3 DM DACL VCOM DACR MIC LEDR/B SW BT-ANT-IC BT-AVDD SW GND BT-AVDD 3V3 BAT+3V7 DC+5V BT-AVDD DACLDACR DC+5V WKUP LEDR/B 3V3 MIC BAT+3V7 BATT- AC7023D 24MHz

2.4G-2.48G PCB Antenna Report SPECIFICATIONS Frequency（MHz） 2400-2480 Peak Gain（dBi） 2.5 Average Gain（dBi） ＞-4 VSWR ＜3.2 Impedance（Ω） 50Ω Antenna Type PCB Polarization Linear Manufacturer: JIANGXI XINGSHENGJIE CIRCUIT CO.,LTD Building 2, Fuxiang Industrial Park, West Xinfeng Industrial Park, Ganzhou City, Jiangxi Province Model: 2.4G BT ANT Antenna Photo & Size Antenna Gain Frequency（MHz） Gain（dBi） 2400 1.57 2410 0.66 2420 0.79 2430 0.86 2440 1.89 2450 1.93 2460 2.01 2470 2.32 2480 2.50 Peak 2.50 2440MHz 3D Antenna Pattern H+V Back View

TEST REPORT Applicant: DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO.,LTD Address: 2A No.60 Lizhong Road Dali Qingxi Town DONGGUAN China FCC ID: 2AKZ8-TWS108 Product Name: TRUE WIRELESS EARBUDS Standard(s): 47 CFR Part 15, Subpart C(15.247) ANSI C63.10-2013 KDB 558074 D01 15.247 Meas Guidance v05r02 The above device has been tested and found compliant with the requirement of the relative standards by China Certification ICT Co., Ltd (Dongguan) Report Number: CR231168287-00 Date Of Issue: 2024/1/12 Reviewed By: Calvin Chen Title: RF Engineer Approved By: Sun Zhong Title: Manager Test Laboratory: China Certification ICT Co., Ltd (Dongguan) No. 113, Pingkang Road, Dalang Town, Dongguan, Guangdong, China Tel: +86-769-82016888 China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-00 Page 2 of 49 Test Facility The Test site used by China Certification ICT Co., Ltd (Dongguan) to collect test data is located on the No. 113, Pingkang Road, Dalang Town, Dongguan, Guangdong, China. The lab has been recognized as the FCC accredited lab under the KDB 974614 D01 and is listed in the FCC Public Access Link (PAL) database, FCC Registration No. : 442868, the FCC Designation No. : CN1314. Declarations China Certification ICT Co., Ltd (Dongguan) 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 a triangle symbol “▲”. Customer model name, addresses, names, trademarks etc. are not considered data. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report cannot be reproduced except in full, without prior written approval of the Company. 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. This report may contain data that are not covered by the accreditation scope and shall be marked with an asterisk “★”. China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-00 Page 3 of 49 CONTENTS DOCUMENT REVISION HISTORY .......................................................................................... 5 1. GENERAL INFORMATION .................................................................................................... 6 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ....................................................... 6 1.2 DESCRIPTION OF TEST CONFIGURATION ........................................................................................... 7 1.2.1 EUT Operation Condition: ............................................................................................................................. 7 1.2.2 Support Equipment List and Details .............................................................................................................. 7 1.2.3 Support Cable List and Details ...................................................................................................................... 7 1.2.4 Block Diagram of Test Setup ......................................................................................................................... 8 1.3 MEASUREMENT UNCERTAINTY .......................................................................................................... 9 2. SUMMARY OF TEST RESULTS .......................................................................................... 10 3. REQUIREMENTS AND TEST PROCEDURES .................................................................. 11 3.1 AC LINE CONDUCTED EMISSIONS .................................................................................................... 11 3.1.1 Applicable Standard ..................................................................................................................................... 11 3.1.2 EUT Setup.................................................................................................................................................... 12 3.1.3 EMI Test Receiver Setup ............................................................................................................................. 12 3.1.4 Test Procedure ............................................................................................................................................. 13 3.1.5 Corrected Amplitude & Margin Calculation ................................................................................................ 13 3.2 RADIATED SPURIOUS EMISSIONS ...................................................................................................... 14 3.2.1 Applicable Standard ..................................................................................................................................... 14 3.2.2 EUT Setup.................................................................................................................................................... 14 3.2.3 EMI Test Receiver & Spectrum Analyzer Setup ......................................................................................... 15 3.2.4 Test Procedure ............................................................................................................................................. 16 3.2.5 Corrected Amplitude & Margin Calculation ................................................................................................ 16 3.3 20 DB EMISSION BANDWIDTH ........................................................................................................... 17 3.3.1 Applicable Standard ..................................................................................................................................... 17 3.3.2 EUT Setup.................................................................................................................................................... 17 3.3.3 Test Procedure ..............................................................................................…

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Report No.:CR231168287-RF-00A FCC Part 15.247 Test Information: Serial No.:2EK3-2Test Date:2023/12/29~2024/01/03 Test Site:RFTest Mode:Transmitting Tester:Arthur SuTest Result:Pass Environmental Conditions: Temperature: (°C) 23.5-24.8 Relative Humidity: (%) 58.7-59 ATM Pressure: (kPa) 101.4-101.6 Test Equipment List and Details: ManufacturerDescriptionModelSerial NumberCalibration DateCalibration Due Date R&SSpectrum AnalyzerFSU262002562023/03/312024/03/30 zhuoxiangCoaxial CableSMA-178211001Each timeN/A * Statement of Traceability: China Certification ICT Co., Ltd (Dongguan) attests that all calibrations have been performed, traceable to National Primary Standards and International System of Units (SI). Reviewer:Tester: Page 1 of 16 Report No.:CR231168287-RF-00A 20 dB Emission Bandwidth BDR Mode Value (MHz) GFSK_Low1.034 GFSK_Middle1.034 GFSK_High1.049 EDR Mode Value (MHz) π/4-DQPSK_Low1.292 π/4-DQPSK_Middle1.307 π/4-DQPSK_High1.301 Page 2 of 16 Report No.:CR231168287-RF-00A BDR GFSK_Low 1.034 MHzGFSK_Middle 1.034 MHz GFSK_High 1.049 MHz EDR π/4-DQPSK_Low 1.292 MHz π/4-DQPSK_Middle 1.307 MHzπ/4-DQPSK_High 1.301 MHz Page 3 of 16 Report No.:CR231168287-RF-00A 99% Occupied Bandwidth BDR Mode 99% OBW (MHz) GFSK_Low0.948 GFSK_Middle0.957 GFSK_High0.969 EDR Mode 99% OBW (MHz) π/4-DQPSK_Low1.176 π/4-DQPSK_Middle1.203 π/4-DQPSK_High1.218 Page 4 of 16 Report No.:CR231168287-RF-00A BDR GFSK_Low 0.948 MHz GFSK_Middle 0.957 MHz GFSK_High 0.969 MHz EDR π/4-DQPSK_Low 1.176 MHz π/4-DQPSK_Middle 1.203 MHz π/4-DQPSK_High 1.218 MHz Page 5 of 16 Report No.:CR231168287-RF-00A Channel Separation BDR Mode Value (MHz) Limit (MHz) Result GFSK_Low1.0010.689Pass GFSK_Middle1.0040.691Pass GFSK_High1.0040.699Pass EDR Mode Value (MHz) Limit (MHz) Result π/4-DQPSK_Low1.0040.861Pass π/4-DQPSK_Middle1.0040.869Pass π/4-DQPSK_High1.0010.867Pass Page 6 of 16 Report No.:CR231168287-RF-00A BDR GFSK_Low 1.001 MHzGFSK_Middle 1.004 MHz GFSK_High 1.004 MHz EDR π/4-DQPSK_Low 1.004 MHz π/4-DQPSK_Middle 1.004 MHzπ/4-DQPSK_High 1.001 MHz Page 7 of 16 Report No.:CR231168287-RF-00A Number of Hopping Frequency BDR ModeValueLimitResult GFSK_Hopping7915Pass EDR ModeValueLimitResult π/4-DQPSK_Hopping7915Pass Page 8 of 16 Report No.:CR231168287-RF-00A BDR GFSK_Hopping 79 EDR π/4-DQPSK_Hopping 79 Page 9 of 16 Report No.:CR231168287-RF-00A Time of Occupancy (dwell time) BDR Mode Pulse width (ms) Dwell time (s) Limit (s) Result GFSK_Hopping_DH10.3940.1260.400Pass GFSK_Hopping_DH31.6570.2650.400Pass GFSK_Hopping_DH52.9320.3130.400Pass EDR Mode Pulse width (ms) Dwell time (s) Limit (s) Result π/4-DQPSK_Hopping_2DH10.4040.1290.400Pass π/4-DQPSK_Hopping_2DH31.6630.2660.400Pass π/4-DQPSK_Hopping_2DH52.9370.3130.400Pass Note: DH1:Dwell time=Pulse time (ms) × (1600/2/79) ×31.6 s DH3:Dwell time=Pulse time (ms) × (1600/4/79) ×31.6 s DH5:Dwell time=Pulse time (ms) × (1600/6/79) ×31.6 s 2DH1: Dwell time=Pulse time (ms) × (1600/2/79) ×31.6 s 2DH3: Dwell time=Pulse time (ms) × (1600/4/79) ×31.6 s 2DH5: Dwell time=Pulse time (ms) × (1600/6/79) ×31.6 s Page 10 of 16 Report No.:CR231168287-RF-00A BDR GFSK_Hopping_DH1 0.394msGFSK_Hopping_DH3 1.657ms GFSK_Hopping_DH5 2.932ms EDR π/4-DQPSK_Hopping_2DH1 0.404ms π/4-DQPSK_Hopping_2DH3 1.663msπ/4-DQPSK_Hopping_2DH5 2.937ms Page 11 of 16 Report No.:CR231168287-RF-00A Maximum Conducted Output Power BDR Mode Value (dBm) Limit (dBm) Result GFSK_Low-0.1421.00Pass GFSK_Middle-0.1321.00Pass GFSK_High-0.6021.00Pass EDR Mode Value (dBm) Limit (dBm) Result π/4-DQPSK_Low0.5221.00Pass π/4-DQPSK_Middle0.5121.00Pass π/4-DQPSK_High0.0621.00Pass Page 12 of 16 Report No.:CR231168287-RF-00A BDR GFSK_Low -0.14 dBmGFSK_Middle -0.13 dBm GFSK_High -0.60 dBm EDR π/4-DQPSK_Low 0.52 dBm π/4-DQPSK_Middle 0.51 dBmπ/4-DQPSK_High 0.06 dBm Page 13 of 16 Report No.:CR231168287-RF-00A 100 kHz Bandwidth of Frequency Band Edge BDR Mode Value (dB) Limit (dB) Result GFSK_Low50.1820.00Pass GFSK_High51.7320.00Pass GFSK_Hopping_Lower49.4720.00Pass GFSK_Hopping_Upper51.8820.00Pass EDR Mode Value (dB) Limit (dB) Result π/4-DQPSK_Low49.5620.00Pass π/4-DQPSK_High51.4420.00Pass π/4-DQPSK_Hopping_Lower50.0320.00Pass π/4-DQPSK_Hopping_Upper51.5620.00Pass Page 14 of 16 Report No.:CR231168287-RF-00A BDR GFSK_Low 50.18 dBGFSK_High 51.73 dB GFSK_Hopping_Lower 49.47 dBGFSK_Hopping_Upper 51.88 dB EDR π/4-DQPSK_Low 49.56 dBπ/4-DQPSK_High 51.44 dB Page 15 of 16 Report No.:CR231168287-RF-00A π/4-DQPSK_Hopping_Lower 50.03 dBπ/4-DQPSK_Hopping_Upper 51.56 dB Page 16 of 16

China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-00-TSP TEST SETUP PHOTOGRAPHS Radiated Emission 9k-30MHz Parallel View Radiated Emission 9k-30MHz Perpendicular View China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-00-TSP Radiated Emission Below 9k-30MHz Ground-parallel View Radiated Emission 30M-1GHz View China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-00-TSP Radiated Emission 30M-1GHz View Radiated Emission Above 1GHz View China Certification ICT Co., Ltd (Dongguan) Report No.: CR231168287-00-TSP Radiated Emission Above 1GHz View