2ASBG-YH9720LSEMassage Chair

RF exposure statement This equipment complies with the FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. FCC Warning 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. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: —Reorient or relocate the receiving antenna. —Increase the separation between the equipment and receiver. —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. —Consult the dealer or an experienced radio/TV technician for help. NOTE 2: Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

FUJIAN YIHE ELECTRONICS CO., LTD. JIAN ROAD, QINXIYANG INDUSTRIAL PARK, FUAN, FUJIAN 355000,China Date: 2023-06-21 FEDERAL COMMUNICATIONS COMMISSION AUTHORIZATION AND EVALUATION DIVISION 7435 OAKLAND MILLS ROAD COLUMBIA, MD 21046 Ref:Attestation Statements Part 2.911(d) (7) Filing FCC ID: 2ASBG-YH9720LSE FUJIAN YIHE ELECTRONICS CO., LTD.certifies that, as of the date of the filing of the application, Cozzia USA LLCis our designated U.S. agent for service of process for the above referenced FCC ID.FUJIAN YIHE ELECTRONICS CO., LTD.accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusionof any Commission-related proceeding involving the equipment. Cozzia USA LLCaccepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: Name: Cozzia USA LLC FRN:0025490376 Address:861 S. Oak Park Road，Covina, CA 91724 Contact Person:Jimmy Lo Tel.:877-977-0656 Email:[email protected] Sincerely, Signed on behalf ofFUJIAN YIHE ELECTRONICS CO., LTD. Signed on behalf ofCozzia USA LLC Name:YUAN RAOName:Jimmy Lo Title:SALES MANAGERTitle:General Manager Date: 2023-06-21Date: 2023-06-21

Reference No.: WTX23X04074634W001 Page 2 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EXHIBIT 2 - EUT EXTERNAL PHOTOGRAPHS EUT View 1 EUT View 2 Reference No.: WTX23X04074634W001 Page 3 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 3 EUT View 4 Reference No.: WTX23X04074634W001 Page 4 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 5 EUT View 6 Reference No.: WTX23X04074634W001 Page 5 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 7 EUT View 8 Reference No.: WTX23X04074634W001 Page 6 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 9 EUT View 10 Reference No.: WTX23X04074634W001 Page 7 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 11 EUT View 12 Reference No.: WTX23X04074634W001 Page 8 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 13 EUT View 14

Reference No.: WTX23X04074634W001 Page 1 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn ANNEX EXHIBIT 1 - PRODUCT LABELING Proposed FCC ID Label Format Specifications: The label shall be securely affixed to a permanently attached part of the device, in a location where it is visible or easily accessible to the user, and shall not be readily detachable. The label shall be sufficiently durable to remain fully legible and intact on the device in all normal conditions of use throughout the device’s expected lifetime. Proposed Label Location on EUT FCC ID Label Location

Reference No.: WTX23X04074634W001 Page 9 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EXHIBIT 3 - EUT INTERNAL PHOTOGRAPHS EUT Housing and Board View 1 EUT Housing and Board View 2 Reference No.: WTX23X04074634W001 Page 10 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT Housing and Board View 3 Solder Board-Component View 1 Reference No.: WTX23X04074634W001 Page 11 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 2 Solder Board-Component View 3 Reference No.: WTX23X04074634W001 Page 12 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 4 Solder Board-Component View 5 Reference No.: WTX23X04074634W001 Page 13 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 6 Solder Board-Component View 7 Reference No.: WTX23X04074634W001 Page 14 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 8 Solder Board-Component View 9 Reference No.: WTX23X04074634W001 Page 15 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 10 Solder Board-Component View 11 Reference No.: WTX23X04074634W001 Page 16 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 12 Solder Board-Component View 13 Reference No.: WTX23X04074634W001 Page 17 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Antenna View

1. RF Exposure Requirements 1.1 General Information Client Information Applicant: FUJIAN YIHE ELECTRONICS CO., LTD Address of applicant: JIAN ROAD, QINXIYANG INDUSTRIAL PARK,FUAN, FUJIAN 355000, China Manufacturer: FUJIAN YIHE ELECTRONICS CO., LTD Address of manufacturer: JIAN ROAD, QINXIYANG INDUSTRIAL PARK,FUAN, FUJIAN 355000, China General Description of EUT: Product Name: Massage Chair Trade Name / Model No.: 9720L-COE (ergotec ET-400) Adding Model(s): / Rated Voltage: AC110V/60Hz Battery Capacity: / Adapter Model: / FCC ID: 2ASBG-YH9720LSE Equipment Type: Portable device Technical Characteristics of EUT: Bluetooth Bluetooth Version: V5.0 (BR/EDR mode) Frequency Range: 2402-2480MHz RF Output Power: 2.82dBm (Conducted) Data Rate: 1Mbps, 2Mbps, 3Mbps Modulation: GFSK, π/4 DQPSK, 8DPSK Quantity of Channels: 79 Channel Separation: 1MHz Type of Antenna: PCB Antenna Antenna Gain: -1.23dBi 1.2 RF Exposure Exemption According to §1.1307(b)(3) and KDB 447498 D04 Interim General RF Exposure Guidance v01, system operating under the provisions of this section shall be operating in a manner that the public is not exposed to radio frequency energy level in excess limit for maximum permissible exposure. Option A: FCC Rule Part 1.1307 (b)(3)(i)(A):The available maximum time-averaged power is no more than 1mW, regardless of separation distance. Option B: FCC Rule Part 1.1307 (b)(3)(i)(B): The available maximum time-averaged power or effective radiated power (ERP), whichever is greater, is less than or equal to the threshold P th (mW) described in the following formula. P th is given by: Option C: FCC Rule Part 1.1307 (b)(3)(i)(C): The minimum separation distance (R in meters) from the body of a nearby person for the frequency (f in MHz) at which the source operates, the ERP (watts) is no more than the calculated value prescribed for that frequency. R must be at least λ/2π, where λ is the free-space operating wavelength in meters. Single RF Sources Subject to Routine Environmental Evaluation RF Source frequency (MHz) Threshold ERP (watts) 0.3-1.34 1,920 R 2 1.34-30 3,450 R 2 /f 2 30-300 3.83 R 2 300-1,500 0.0128 R 2 f 1,500-100,000 19.2R 2 For Multiple RF sources: FCC Rule Part 1.1307(b)(3)(ii): (A) The available maximum time-averaged power of each source is no more than 1 mW and there is a separation distance of two centimeters between any portion of a radiating structure operating and the nearest portion of any other radiating structure in the same device, except if the sum of multiple sources is less than 1 mW during the time-averaging period, in which case they may be treated as a single source (separation is not required). (B) In the case of fixed RF sources operating in the same time-averaging period, or of multiple mobile or portable RF sources within a device operating in the same time averaging period, if the sum of the fractional contributions to the applicable thresholds is less than or equal to 1 as indicated in the following equation. 1.3 Calculated Result Radio Access Technology Prediction Frequency Output Power Antenna Gain Duty Cycle Tune-Up Time-Averaged Power ERP (MHz) (dBm) (dBi) (%) (dBm) (dBm) Bluetooth 2402 2.82 -1.23 100 3.00 -0.38 Frequency Option Min. Distance Max. Power Exposure Limit Ratio Result (MHz) (cm) (dBm) (mW) (mW) Pass/Fail 2402 B 0.5 3.00 2.00 2.788 0.72 Pass Note: 1. Time-Averaged Power=Output Power * Duty Cycle; ERP= Time-Averaged Power+ Antenna gain-2.15dB 2. Option A, B and C refers as clause 1.2. 3. For option B, Max (time-averaged power, effective radiated power (ERP)) converts to Max. Power. For option C, ERP converts to Max. Power; 4. For option B, P th (mW) converts to Exposure Limit (mW); For option C, ERP (W) converts to Exposure Limit (mW). 5. Ratio= Tune-Up ERP (mW)/ Exposure Limit (mW) Mode for Simultaneous Multi-band Transmission: Radio Access Technology Ratio 1 Ratio 2 Simultaneous Ratio Limit Result Pass/Fail -- -- -- -- -- -- Result: Pass

CustomerName:SHENZHENSHIXINZHONGXINTECHNOLOGY.CO.,LTD ProductName:BTAntenna SampleModel:F-6988 ReferenceStandard:GB/T9410-2008;ANSI/IEEEStd149-1979 IssueDate:2022.9.27 Engineer: Date:2022.09.27 Auditor: Date:2022.09.27 Approver: Date:2022.09.27 TestingReport 1.GeneralInformation 1.1GeneralInformationoftestinginstitutions Name ShenzhenHetuoTechnologyCo.,Ltd. Addres s Room1202B,BuildingC6,HengfengIndustrialCity,Xixia ng,BaoanDistrict,Shenzhen Tel 18665849001 E-mail [email protected] Equip ment Agilent5071C 1.2Testingprinciple Multi-probeOTAMeasurementSystem 1.3Testequipment EquipmentModelNo.SerialNo.Manufacturer Calibration date Next calibration date 24probe microwave chamber 4*3*3NAFEITU2021.3.12023.3.14 Network Analyzer 5071CNA Agilent 2022.5.132023.5.12 1.4 Testenvironment Temperature 24°C±1.5°C Humidity 45%RH Pressure 101kPa AntennaPhoto&Lenght(mm) Test uncertainty The uncertainty was calculated on the basis of the GUM published by ISO, using the inclusion factor of K=2 and the 95% confidence level to express the extended uncertainty. EquipmentModelNo.SerialNo.Manufacturer Calibration date Next calibration date 24probe microwave chamber 4*3*3NAFEITU2021.3.152023.3.14 Network Analyzer 5071CNA Agilent 2022.5.12023.5.12 1.5 1.6 2.SampleInformation 2.1Clientinformation Name SHENZHENSHIXINZHONGXINTECHNOLOGY.CO.,LTD Address A1,ShajingDonghuanIndustrialZone,Bao'anDistrict,Shenzhen Contacts MaChao Tel 18218809918 E-mail [email protected] 2.2DescriptionofEUT(S) ProductName BTAntenna SampleModel F-6988 AntennaSize 4.6*10.4mm AntennaType PCBantenna SerialNo. / TestItem AntennaGain,Radiationpattern FrequencyRange 2400-2500MHz ReceivedDate 2022.09.25 TestDate 2022.09.27 Remark ThelengthoftheRFcableis50mm TestPhotos Testdata Frequency (MHz) 2400.02410.02420.02430.02440.02450.02460.02470.02480.02490.02500.0 Gain(dBi) -1.82-1.63-2.22-2.15-1.57-1.61-1.39-1.23-1.28-1.57-1.23

Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 1 of 63 TEST REPORT Reference No. .................... : WTX23X04074634W001 FCC ID ................................ : 2ASBG-YH9720LSE Applicant ........................... : FUJIAN YIHE ELECTRONICS CO., LTD Address ............................. : JIAN ROAD, QINXIYANG INDUSTRIAL PARK,FUAN, FUJIAN 355000, China Manufacturer ..................... : The same as Applicant Address ............................. : The same as Applicant Product Name ................... : Massage Chair Model No... ......................... : 9720L-COE (ergotec ET-400) Standards .......................... : FCC Part 15.247 Date of Receipt sample .... : 2023-04-10 Date of Test........................ : 2023-04-10 to 2023-06-12 Date of Issue ..................... : 2023-06-12 Test Report Form No. ....... : WTX_Part 15_247W Test Result ......................... : Pass Remarks: The results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of approver. Prepared By: Waltek Testing Group (Shenzhen) Co., Ltd. Address: 1/F., Room 101, Building 1, Hongwei Industrial Park, Liuxian 2nd Road, Block 70 Bao'an District, Shenzhen, Guangdong, China Tel.: +86-755-33663308 Fax.: +86-755-33663309 Email: [email protected] Tested by: Approved by: Gala Wang Silin Chen Reference No.: WTX23X04074634W001 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 2 of 63 TABLE OF CONTENTS 1. GENERAL INFORMATION .................................................................................................................................... 5 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ......................................................................... 5 1.2 TEST STANDARDS ................................................................................................................................................. 6 1.3 TEST METHODOLOGY ........................................................................................................................................... 6 1.4 TEST FACILITY ...................................................................................................................................................... 6 1.5 EUT SETUP AND TEST MODE .............................................................................................................................. 7 1.6 MEASUREMENT UNCERTAINTY ............................................................................................................................. 9 1.7 TEST EQUIPMENT LIST AND DETAILS ................................................................................................................. 10 2. SUMMARY OF TEST RESULTS ......................................................................................................................... 12 3. ANTENNA REQUIREMENT ................................................................................................................................. 13 3.1 STANDARD APPLICABLE ..................................................................................................................................... 13 3.2 EVALUATION INFORMATION ................................................................................................................................ 13 4. FREQUENCY HOPPING SYSTEM REQUIREMENTS .................................................................................... 14 4.1 STANDARD APPLICABLE ..................................................................................................................................... 14 4.2 FREQUENCY HOPPING SYSTEM ......................................................................................................................... 14 4.3 EUT PSEUDORANDOM FREQUENCY HOPPING SEQUENCE ............................................................................... 15 5. QUANTITY OF HOPPING CHANNELS AND CHANNEL SEPARATION .................................................... 16 5.1 STANDARD APPLICABLE ..................................................................................................................................... 16 5.2 TEST SETUP BLOCK DIAGRAM ........................................................................................................................... 16 5.3 TEST PROCEDURE .............................................................................................................................................. 16 5.4 SUMMARY OF TEST RESULTS/PLOTS ................................................................................................................. 17 6. DWELL TIME OF HOPPING CHANNEL ........................................................................................................... 18 6.1 STANDARD APPLICABLE ..................................................................................................................................... 18 6.2 TEST SETUP BLOCK DIAGRAM ........................................................................................................................... 18 6.3 TEST PROCEDURE .............................................................................................................................................. 18 6.4 SUMMARY OF TEST RESULTS/PLOTS ................................................................................................................. 19 7. 20DB BANDWIDTH ............................................................................................................................................... 20 7.1 STANDARD APPLICABLE ..................................................................................................................................... 20 7.2 TEST SETUP BLOCK DIAGRAM ...................…

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Reference No.: WTX23X04074634W001 Page 18 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EXHIBIT 4 - TEST SETUP PHOTOGRAPHS Conducted Emission Test Setup Radiation Emission Test Setup (Below 30MHz) Reference No.: WTX23X04074634W001 Page 19 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Radiation Emission Test Setup (30MHz to 1GHz) Radiation Emission Test Setup (1GHz to 18GHz) Reference No.: WTX23X04074634W001 Page 20 of 20 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Radiation Emission Test Setup (Above 18GHz) ***** END OF REPORT *****