2AHN6-AUBS173BLTH Karaoke Speaker with Mic

0-40 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.

MCU-JL AC6966B SW MICOR USB-5V BAT3.7V Amplifier BT -RF ANT Crystal Oscillator 24M ±10PP FM-ANT USB TF AUX- IN Charging manage ment Only RX 2402-2480MHz

Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: SZ3210608-22025E-RF Page 1 of 5 EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: SZ3210608-22025E-RF Page 2 of 5 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: SZ3210608-22025E-RF Page 3 of 5 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: SZ3210608-22025E-RF Page 4 of 5 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: SZ3210608-22025E-RF Page 5 of 5

Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: SZ3210608-22025E-RF Page 1 of 3 EXHIBIT C - EUT INTERNAL PHOTOGRAPHS Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: SZ3210608-22025E-RF Page 2 of 3 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: SZ3210608-22025E-RF Page 3 of 3 Bluetooth Antenna

Cir cuit description Bat tery(3.7V)provides energy for the Bluetooth chi p(AC6966B); Crystal oscillator(24MHz) provides the clock signal for the Bluetooth chip. Products is in broadcasting state when stand by, broadcasting Bluetooth signals according to a certain time interval. Bluetooth signals get through a matching circuit, and then transmitted to the space through the antenna(2402MHz-2480MHz). When the product is connected, the product can be in two-way communication with mobile phones, and then the phone's Bluetooth module sends Bluetooth signals into space, the product receives the Bluetooth signal through an antenna, transmission to the Bluetooth chip via matching circuit.

1 2 3 4 5 6 7 8 ABCD 8 7 6 5 4 3 2 1 D CBA VDD 1 DM 2 DP 3 GND 4 GND 5 GND 6 USB1USB-6.8MM-J A U X _ I N PU T VDDLDO R6 NC VBAT+ VBAT- 1234567 USB2AMICRO-P R2 NC D2RED C1 NC DMDPUSB_5V R4 NC 12 ANT2ANTENNA_PIFA A 1 B 2 F 3 G 4 C 5 E 6 D 7 USB SD MP3 FM LED1LED4*8-4 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 BAT1A NC R1 NC CHRG 1 GND 2 BAT 3 PROG 6 LD 5 VDD/IN 4 U4 NC RED PRO 5V 12 P1A NC K E Y R33 9.1K NEXT PRE S4 3*6*3.5 S3 3*6*3.5 MIC_DET S2 3*6*3.5 R32 15K S1 3*6*3.5 AD_KEY R10 3K P/P MUTE AB/D Mode H H Class D H L Class AB L L Power Down C3104 1234 MIC16.5MM C51102 R540R USB_5V VOUT 1 GND 2 EN 3 CRY1 4 VIN 5 CRY2 6 U7 NC C65 NC VDDLDO C62105 C64 NC VDDLDO VDDLDO M MIC_DET IR 1 GND 2 +V 3 IR1 NC IR_IN GND VDDIO R9 NC C4 NC VM 1 VDD 2 GND 3 U3 NC VBAT+VBAT- XB3303A 104 1K R3 NC Q2A8050 R144.7K 12 LED2A2P 2.0 LED- LED_SW C8 NC R1510R 12 LED3A NC VDDLDO LED+ VDDIO R42 NC 1 2 3 4 P3B NC DACL C13105 R120R OUT IN BAT2A NC AUX_IN C11 NC 12 P2A2P-2.0 BAT- 1 BAT- 2 VDD 3 GND 4 GND 5 U6 NC VBAT- VDD VDD R21 0R IR 1 GND 2 +V 3 IR2 NC VOUT 1 GND 2 EN 3 CRY1 4 VIN 5 CRY2 6 U8 NC WX_5V C53 NC VDDLDO C55 NC MIC_IN R50 NC C56 NC R49 NC C25 NC Q4A NC KC WU_MIC_OUT 1234 P4A NC WX_5VKC C26 105 BAT3A2P-2.0-R DACL C36105 C9 NC OUT A M P EN R11 NC C6 NC LSP-LSP+ IN- 7 IN+ 6 CN 3 CTRL 4 AVDD 5 CP 2 OUT+ 8 OUT- 9 VBAT 1 CPOUT 10 GND 11 U10 NC C23 NC R5 NC C24 NC C34 NC R31 NC VDDLDO C17 NC EN C22105 AMP_EN R35 NC C7 NC RSP-RSP+ VDDLDOVDDLDO MUTE C15105 R2747K R13 47K C18473 OUT R18 NC RSP- SD 1 NC 2 BYP 3 IN- 4 OUT- 5 VDD 6 GND 7 OUT+ 8 U5HAA2018A VDDLDO MUTE AB/D RSP+ R26 NC C16 NC LSP- SD 1 NC 2 BYP 3 IN- 4 OUT- 5 VDD 6 GND 7 OUT+ 8 U2 NC C31 NC LSP+ MUTE AB/D OUT C32 NC C14 NC VDDLDO BAT_DET R4722K 1 ANT1 NC FMANT LINE_IN AD_KEY Y124M LED_SW QL3102 IR_IN R19 NC SD-VDD R242R T F CA R D VDDIO R25 3K SD-DET SD_CLKSD_CMDSD_DAT SD_CLK DAT2 1 DAT3/CD 2 CMD/DI 3 Cd 9 VDD 4 CLK 5 VSS 6 DAT0/DO 7 DAT1 8 12131110 TF1TF LINE_IN C12104 AUX_INPUT AD_KEY R16 100K 1234 AUX1 NC AUX_IN R20 NC R22 33K LSP-LSP+ AMP_EN R28 330K R7 NC R8 NC R230R VDDLDO C5 NC R29 0R C10 NC 321 LED4B NC 321 LED5B NC R30 NC R34 NC VDDLDOIN1GNDVDDLDOIN2GND LED_EN R37 NC USB_5V RU2 NC VDDLDO BT_RF VDDIO FM FM_IP DACVSS 1 VCOM 2 DACL 3 DACR 4 PB7/SD0CLK/AUX1R/ADC9 5 PB6/SD0CMD/AUXL/ADC8 6 PB4/SD0DAT/ADC7 7 LDO_IN/PB5 8 VBAT 9 VDDIO 10 BT_AVDD 11 PB3/SDODAT/ADC6 12 PB2/SD0CMD/SPIIDA 13 PB1/SPIIDOA/ADC5 14 PB0/SD0CLK/SPIICLK 15 FMIP 16 SPII/SD0DATA/PC3 22 BT_RF 17 BT_OSCI 18 BT_OSCO 19 ADC12/SPIIDOB/SD0CLK/PC5 20 ADC11/SPIICLK/SD0CMD/PC4 21 ADC10/PC2 23 ADC14/USBDM 24 ADC13/USBDP 25 ADC4/PA6 26 PA5 27 ADC3/AUX0R/SD0CMD/PA4 28 ADC2/AUXL/SD0DAT/PA3 29 MIC_BIAS/SD0CLK/PA2 30 ADC1/MIC/PA1 31 ADC0/SD_PG/PA0 32 PAD 0 U1AC6966B LED_EN C20 105 C30 105 C19 105 SD_DAT SD_CMD SD_CLK FM_IP BT_OSCIBT_OSCOBT_RF SEG1 SEG2 SEG3 SEG4SEG5SEG6SEG7DM DP MIC_IN BAT_DET MUTE BT_OSCI BT_OSCO AB/D BT_VDD VDDIO 5 4 3 2 1 SW1B G 4MM RED R17 1.5R R36 10K Q1AS8550 D3SS14 R381K VBAT+ 5V R39 NC SEG7 C2 NC

Note: This report may contain data that are not covered by the A2LA accreditation and are marked with an asterisk “★”. BACL 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. FCC PART 15.247 TEST REPORT For Bytech NY lnc. 2585 West 13th Street Brooklyn NY 11223 USA FCC ID: 2AHN6-AUBS173 Report Type: Original Report Product Type: BLTH Karaoke Speaker with Mic Re port Number: SZ3210608-22025E-00B Re port Date: 2021-07-20 Reviewed B y: Jacob Kong RF En gineer Prepared By: Bay Area Compliance Laboratories Corp. (Shenzhen) 5F(B-West) , 6F, 7F, the 3rd Phase of Wan Li Industrial Building D, Shihua Rd, FuTian Free Trade Zone, Shenzhen, China Tel: +86-755-33320018 Fax: +86-755-33320008 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: SZ3210608-22025E-00B FCC Part 15.247 Page 2 of 54 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 EXTERNAL I/O CABLE .................................................................................................................................................. 6 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 7 SUMMARY OF TEST RESULTS ............................................................................................................................... 8 TEST EQUIPMENT LIST ........................................................................................................................................... 9 FCC§15.247 (i), §1.1307 (b) (1) &§2.1093 – RF EXPOSURE ...................................................................................... 10 APPLICABLE STANDARD ............................................................................................................................................ 10 FCC §15.203 – ANTENNA REQUIREMENT .......................................................................................................... 11 APPLICABLE STANDARD ............................................................................................................................................ 11 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 11 FCC §15.207 (a) – AC LINE CONDUCTED EMISSIONS ..................................................................................... 12 APPLICABLE STANDARD ............................................................................................................................................ 12 EUT SETUP ................................................................................................................................................................ 12 EMI TEST RECEIVER SETUP ....................................................................................................................................... 12 TEST PROCEDURE ...................................................................................................................................................... 12 CORRECTED FACTOR & MARGIN CALCULATION ....................................................................................................... 13 TEST DATA ................................................................................................................................................................ 13 FCC §15.205, §15.209 & §15.247(d) – RADIATED EMISSIONS ........................................................................... 16 APPLICABLE STANDARD .…

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Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: SZ3210608-22025E-RF Page 1 of 2 EXHIBIT D - TEST SETUP PHOTOGRAPHS Conducted Emissions - Front View Conducted Emissions - Side View Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: SZ3210608-22025E-RF Page 2 of 2 Radiated Spurious Emissions View (Below 1 GHz) Radiated Spurious Emissions View (Above 1 GHz)