2BBOI-CO708Computer Speaker

CO708CO-708 霹僈⛼

Huizhou huayusi Technology Co., Ltd * the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process. U.S. Agent Designation for Service of Process - Certification Attestation Letter July 7, 2023 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: 2BBOI-CO708 Per section 2.911(d)(7) of the FCC rules, Huizhou huayusi Technology Co., Ltd certifies that the equipment for which authorization is sought is designated to the following U.S. Designated agent* for service of process: Company Name: Phuntion LLC Physical U.S. Company Address: 25214 Spectrum, Irvine, CA92618 Agent name: Jun.Tian Agent Email Address: [email protected] FRN: 0033422403 The above contact person accepts the obligation for service of process. The applicant 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. Applicant Signed: Designated Agent Signed: (Required, if different to Applicant): Signed: Signed: Printed name: Printed name: Jun.Tian Title: Title: CEO Company Name: Company Name: Phuntion LLC Date: Huanhuan.chen Manager Huizhou huayusi Technology Co., Ltd July 14, 2023Date: July 14, 2023

Huizhou huayusi Technology Co., Ltd Covered Equipment Certification Attestation Letter 7/14/2023 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: 2BBOI-CO708 Huizhou huayusi 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. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Huizhou huayusi 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. Signed: Printed name: huanhuan.chen Title: Manager Company Name: Huizhou huayusi Technology Co., Ltd Date: 7/14/2023

Huizhou huayusi Technology Co., Ltd 7/14/2023 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 REQUEST FOR CONFIDENTIALITY - FCC FCC ID: 2BBOI-CO708 Pursuant to Sections 0.457(d)(1)(ii) and 0.459 of the Commission’s Rules and FCC Guidance document 726920, we hereby request confidential treatment of information accompanying this application as outlined below: PERMANENT LONG-TERM CONFIDENTIALITY: Schematics Bill of Materials/Parts List Block Diagrams Theory of Operation The above information contains trade secrets and proprietary information not customarily released to the public. The public disclosure of this information might be harmful to the applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rule 0.457(d)(1)(ii), disclosure of this Application and all accompanying materials will not be made before the date of the Grant for this Application. Sincerely, Signed: Printed name: huanhuan.chne Title: Manager Date: 7/14/2023

Huizhou huayusi Technology Co., Ltd Model difference statement EUT: Computer Speaker Model No.: CO708,CO709,CO710,CO712,CO713,A-30,A-293,A-231,A-232,A-233,A-235,A-236 (Only the model name is different, the other appearance, circuit principle, PCB are the same.) FCC ID: 2BBOI-CO708 Signed: Printed name: huanhuan.Chen Address: No.02,6th Floor, Technology Center Building, Lixin Road, Zhongkai High-tech Zone, Huizhou city ,Guangdong, China

Huizhou huayusi Technology Co., Ltd 7/14/2023 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 REQUEST FOR CONFIDENTIALITY - FCC FCC ID: 2BBOI-CO708 Pursuant to Sections 0.457(d)(1)(ii) and 0.459 of the Commission’s Rules and FCC Guidance document 726920, we hereby request confidential treatment of information accompanying this application as outlined below: PERMANENT LONG-TERM CONFIDENTIALITY: Schematics Bill of Materials/Parts List Block Diagrams Theory of Operation The above information contains trade secrets and proprietary information not customarily released to the public. The public disclosure of this information might be harmful to the applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rule 0.457(d)(1)(ii), disclosure of this Application and all accompanying materials will not be made before the date of the Grant for this Application. Sincerely, Signed: Printed name: huanhuan.chne Title: Manager Date: 7/14/2023

FCC ID: 2BBOI-CO708 Page 1/3 External photo FCC ID: 2BBOI-CO708 Page 2/3 FCC ID: 2BBOI-CO708 Page 3/3 --END---

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FCC ID: 2BBOI-CO708 Page 1/3 Internal photo FCC ID: 2BBOI-CO708 Page 2/3 FCC ID: 2BBOI-CO708 Page 3/3 ---END--- 2402-2480MHz BT Antenna

Page 1 of 3 Address: No.11, WuSong Road, Tel: 86-769-22607797 DongchengDistrict,Dongguan, Fax: 86-769-22607907 GuangdongProvince,China523117 http://www.cpcteam.com RF EXPOSURE EVALUATION EUT Specification EUT Computer Speaker Model Number CO708 Series models CO709,CO710,CO712,CO713,A-30,A-293,A-231,A-232, A-233,A-235,A-236 FCC ID 2BBOI-CO708 Antenna gain (Max) -0.58dBi Operation Frequency 2402-2480MHz Input Rating DC 5V Standard 47 CFR Part 1.1307 47 CFR Part 1.1310 KDB447498D01 General RF Exposure Guidance v06 Modulation GFSK, π/4DQPSK,8DPSK Limits According to FCC Part1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in part1.1307(b) 90495-23-72-23-PP002 Page 2 of 3 Address: No.11, WuSong Road, Tel: 86-769-22607797 DongchengDistrict,Dongguan, Fax: 86-769-22607907 GuangdongProvince,China523117 http://www.cpcteam.com F= Frequency in MHz Friis Formula Friis transmission formula: Pd = (Pout*G)/(4* Pi * R 2) Where Pd = power density in mW/cm2 Pout = output power to antenna in mW G = gain of antenna in linear scale Pi = 3.1416 R = distance between observation point and center of the radiator in cm Pd id the limit of MPE, 1 mW/cm2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Test Procedure: Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. 90495-23-72-23-PP002 Page 3 of 3 Address: No.11, WuSong Road, Tel: 86-769-22607797 DongchengDistrict,Dongguan, Fax: 86-769-22607907 GuangdongProvince,China523117 http://www.cpcteam.com Calculated Result and Limit BT: Mode Frequency (MHz) Peak output power (dBm) Peak output power (mW) Target power （dBm） Maximum tune-up Power (mW) Antenna gain Power Density (S) (mW /cm2) Limited of Power Density (S) (mW /cm2) Test Result (dBi) (Linear) GFSK 2402 -1.535 0.702 0±2 1.58 -0.58 0.87 0.0027 1 Complies 2441 0.778 1.196 0±1 1.58 -0.58 0.87 0.0027 1 Complies 2480 1.374 1.372 1±1 1.58 -0.58 0.87 0.0027 1 Complies 8DPSK 2402 -1.368 0.729 0±2 1.58 -0.58 0.87 0.0027 1 Complies 2441 1.072 1.279 1±1 1.58 -0.58 0.87 0.0027 1 Complies 2480 1.685 1.474 1±1 1.58 -0.58 0.87 0.0027 1 Complies The Maxinum power is less than the limit, complies with the exemption requirements, SAR is exempted. Remark: The Max Conducted Peak Output Power data refer to report Report No.: 90495-23-72-23-PP001

Page 1 of 60 Address:No.11,WuSongRoad, Tel: 86-769-22607797 DongchengDistrict,Dongguan, Fax: 86-769-22607907 GuangdongProvince,China523117 http://www.cpcteam.com TEST REPORT Report Number. .................... : 90495-23-72-23-PP001 Date of issue ......................... : July 12.2023 Tested by (+signature) ......... : Duke Chen Approved by (+signature) .... : Jason Gao Testing Laboratory name ..... : SLG-CPC Testlaboratory Co., Ltd. Address ................................. : No. 11, Wu Song Road, Dongcheng District, Dongguan, Guangdong Province, China 523117 Applicant’s name .................. : Huizhou huayusi Technology Co., Ltd Address ................................. : No.02,6th Floor, Technology Center Building, Lixin Road, Zhongkai High-tech Zone, Huizhou city ,Guangdong, China Manufacturer’s name ......... : Huizhou Coomaer Technology Co., Ltd Address ................................. : 3 Floor B block, Number 5 building,East of first road, Industrial base of tongqiao town,Zhongkai high-tech area,Huizhou city Guangdong China. Factory’s name ................... : Huizhou Coomaer Technology Co., Ltd Address ................................. : 3 Floor B block, Number 5 building,East of first road, Industrial base of tongqiao town,Zhongkai high-tech area,Huizhou city Guangdong China. Standard(s) ........................... : FCC 47 CFR Part 15, Subpart C Test item description ........... : Computer Speaker Trade Mark ............................ : COOMAER Model/Type reference ........... : CO708 Series Model ......................... : CO709,CO710,CO712,CO713,A-30,A-293,A-231,A-232,A-233, A-235,A-236 FCC ID ................................... : 2BBOI-CO708 Date of receipt of test item .. : June.16.2023 Date (s) of performance of test ......................................... : June.16.2023 to June.25.2023 Summary of Test Results ..... : Pass The Summary of Test Results based on a technical opinion belongs to the standard(s). General disclaimer: This report shall not be reproduced except in full, without the written approval of SLG-CPC Testlaboratory Co., Ltd. The test results in the report only apply to the tested sample. 90495-23-72-23-PP001 Page 2 of 60 Address:No.11,WuSongRoad, Tel: 86-769-22607797 DongchengDistrict,Dongguan, Fax: 86-769-22607907 GuangdongProvince,China523117 http://www.cpcteam.com TABLE OF CONTENTS 1 EUT TECHNICAL DESCRIPTION ............................................................................................. 4 2 SUMMARY OF TEST RESULT ................................................................................................. 5 3 TEST METHODOLOGY ............................................................................................................ 6 3.1 GENERAL DESCRIPTION OF APPLIED STANDARDS .................................................... 6 3.2 MEASUREMENT EQUIPMENT USED .............................................................................. 6 3.3 DESCRIPTION OF TEST MODES ..................................................................................... 7 4 FACILITIES AND ACCREDITATIONS ....................................................................................... 8 4.1 FACILITIES ........................................................................................................................ 8 4.2 LABORATORY ACCREDITATIONS AND LISTINGS .......................................................... 8 5 TEST SYSTEM UNCERTAINTY ............................................................................................... 9 6 SETUP OF EQUIPMENT UNDER TEST ................................................................................ 10 6.1 RADIO FREQUENCY TEST SETUP 1 ............................................................................ 10 6.2 RADIO FREQUENCY TEST SETUP 2 ............................................................................ 10 6.3 CONDUCTED EMISSION TEST SETUP ......................................................................... 12 6.4 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM ............................................. 13 6.5 SUPPORT EQUIPMENT .................................................................................................. 13 7 Frequency Hopping System Requirements ............................................................................. 14 7.1 Standard Applicable ......................................................................................................... 14 7.2 EUT Pseudorandom Frequency Hopping Sequence ....................................................... 14 7.3 Equal Hopping Frequency Use ........................................................................................ 15 7.4 Frequency Hopping System ............................................................................................. 15 8 TEST REQUIREMENTS ......................................................................................................... 16 8.1 20DB BANDWIDTH ......................................................................................................... 16 8.2 CARRIER FREQUENCY SEPARATION .......................................................................... 21 8.3 NUMBER OF HOPPING FREQUENCIES ....................................................................... 26 8.4 AVERAGE TIME OF OCCUPANCY (DWELL TIME) ........................................................ 29 8.5 MAXIMUM PEAK CONDUCTED OUTPUT POWER ....................................................... 37 8.6 RADIATED SPURIOUS EMISSION ................................................................................. 41 8.7 CONDUCTED EMISSION TEST ................................... ................................................... 57 8.8 ANTENNA APPLICATION ................................................................................................ 60 90495-23-72-23-PP001 Page 3 of 60 Address:No.11,WuSongRoad, Tel: 86-769-22607797 DongchengDistrict,Dongguan, Fax…

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Inverted F Antenna Specification Summary ITEMANT SPEC Model Name 2.4G ANT HorizontalVertical 2400MHz 2400MHz2500MHz2400MHz2400MHz 2500MHz Center Frequency -1.26 -0.76 -0.58 -5.25 -2.46 -1.86 MAX. Gain -0.58dB PolarizationHorizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm) Applicant’s name : Huizhou huayusi Technology Co., Ltd Address : No.02,6th Floor, Technology Center Building, Lixin Road, Zhongkai High-tech Zone, Huizhou city ,Guangdong, China Model：CO708 Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain (dB) Frequency (MHz) MaxMinAvg 2400-1.26174-30.0801-7.18716 2450-0.765802-36.5604-7.48023 2500-0.585582-22.0315-6.59127 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain(dB) Frequency (MHz) Max Min Avg 2400 -5.2537 -22.1424 -12.4294 2450 -2.4652 -24.5837 -10.4702 2500 -1.86120 -29.5214 -9.20432 ANT Test Labs：Attestation of Global Compliance Co., Ltd.

FCC ID: 2BBOI-CO708 Test photo Radiated emission FCC ID: 2BBOI-CO708 Conducted Emission