2BG55-G4G4 Gaming Soundbar

Changsha Wingjoy Technology Co., Ltd. U.S. Agent Designation for Service of Process (Applicant and U.S. Agent are Separate Parties) TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA ATTENTION: FCC Certification – Section 2.911(d)(7) Information Designated U.S. Agent Company Name: AOCE Corporation Inc. FRN: 0033401381 Contact Name: Johnson.wang Address: 6547 N Academy Bivd #2266, Colorado Springs, CO,80918 United States Telephone No: +1-346-582-5234 Email: [email protected] This letter is to confirm that we (“the Designated U.S. Agent) have accepted the responsibility to act as the Designated U.S. Agent for Service of Process as required by section 47 CFR 2.911(d)(7) on behalf of the Applicant noted below. U.S. Agent Signature: Date: 2024/9/5 Signed by (Printed Name/Title): The Applicant acknowledges that they must maintain an agent for no less than one year after terminating all marketing and importation OR the conclusion of any Commission-related proceeding involving the equipment. The applicant further acknowledges their responsibility to inform the FCC whenever the Designated U.S. Agent information above changes. Applicant Company name: Changsha Wingjoy Technology Co., Ltd. Grantee Code: 2BG55 FCC ID: 2BG55-G4 FRN: 0035585959 Contact Name: Qin kangkang Address: 508-1, Building 16, Phase 2, Xincheng Science and Technology Park, NO. 622, Qingshan Road, Changsha, China Telephone No: 86-16721555444 Email: [email protected] Applicant Signature: Date: 2024/9/5 Signed by (Printed Name/Title): Qin kangkang / Product Manager

Changsha Wingjoy Technology Co., Ltd. 2024/9/5 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: 2BG55-G4) [Changsha Wingjoy 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, (Applicant signature) (Applicant printed name) Qin kangkang Changsha Wingjoy Technology Co., Ltd. 2024/9/5 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID: 2BG55-G4) [Changsha Wingjoy 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, (Applicant signature) (Applicant printed name) Qin kangkang

Changsha Wingjoy Technology Co., Ltd. 2024/9/5 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: G4 Gaming Soundbar Trademark: N/A MODEL: G4, G1, G2, G3, G5, G6, G7, G8, G9, A46 FCC ID: 2BG55-G4 To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - Block Diagram - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title: Qin kangkang / Product Manager Contact information / address: 508-1, Building 16, Phase 2, Xincheng Science and Technology Park, NO. 622, Qingshan Road, Changsha, China

Changsha Wingjoy Technology Co., Ltd. 2024/9/5 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION EUT NAME: G4 Gaming Soundbar Trademark: N/A MODEL: G4, G1, G2, G3, G5, G6, G7, G8, G9, A46 FCC ID: 2BG55-G4 To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Client’s signature: Client’s name / title: Qin kangkang / Product Manager Contact information / address: 508-1, Building 16, Phase 2, Xincheng Science and Technology Park, NO. 622, Qingshan Road, Changsha, China

Changsha Wingjoy Technology Co., Ltd. 2024/9/5 EUT NAME: G4 Gaming Soundbar Trademark: N/A MODEL: G4, G1, G2, G3, G5, G6, G7, G8, G9, A46 FCC ID: 2BG55-G4 All the model are the same circuit and RF module, except model names. Sincerely Client’s signature: Client’s name / title: Qin kangkang / Product Manager Contact information / address: 508-1, Building 16, Phase 2, Xincheng Science and Technology Park, NO. 622, Qingshan Road, Changsha, China

External Photos

Size:50*20mm FCC ID: 2BG55-G4 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. (2) This device must accept any interference received, including interference that may cause undesired operation Label location

Internal Photos Antenna

FCC ID: 2BG55-G4 RF exposure evaluation §2.1093 Radiofrequency radiation exposure evaluation: Portable Devices. According to§15.247(i) and§1.1307b(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the commission’s guidance. The 1-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, where  f(GHz) is the RF channel transmit frequency in GHz  Power and distance are rounded to the nearest mW and mm before calculation  When the minimum test separation distance is < 5 mm, a distance of 5 mm according is applied to determine SAR test exclusion.  The result is rounded to one decimal place for comparison  GFSK Modulation Frequency (GHz) Max. Power (dBm) Tune up Power (dBm) Max. Tune up Power (dBm) Max. Tune up Power (mW) Test distance (mm) Result exclusion thresholds for 1-g SAR 8DPSK 2.480 1.53 1±1 2 1.58 5 0.50 3.0 Conclusion: For the max result: 0.50W/Kg ≤ FCC Limit 3.0 for 1g SAR. The Product unsupported at the same time to Transmitting.

Inverted F Antenna Specification Summary CEPS TNA METI TNA G4.2 emaN ledoM lacitreV latnoziroH 2400MHz 2400MHz2500MHz2400MHz2400MHz 2500MHz Center Frequency -1.26-0.76-0.58-5.25-2.46-1.86 Bd85.0- niaG .XAM lacitreV dna latnoziroH noitaziraloP Azimuth Beam Pattern Omni-directional mhO 05 ecnadepmI mm14.4 htgneL annetnA Manufacture Antenna Photo & Length (mm) 5.4mm Corporation: Changsha Wingjoy Technology Co., Ltd. Address: 508-1, Building 16, Phase 2, Xincheng Science and Technology Park, NO. 622, Qingshan Road, Changsha, China 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.

No.：BCTC/RF-EMC-005 Page: 1 of 85 Edition：B.2 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2408810131E Applicant: Changsha Wingjoy Technology Co., Ltd. Product Name: G4 Gaming Soundbar Test Model: G4 Tested Date: 2024-08-12 to 2024-08-28 Issued Date: 2024-08-28 Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 2 of 85 Edition：B.2 FCC ID: 2BG55-G4 The test report is effective only with both signature and specialized stamp.This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full.The tested sample(s) and the sample information are provided by the client. Product Name: G4 Gaming Soundbar Trademark: N/A Model/Type Reference: G4 G1, G2, G3, G5, G6, G7, G8, G9, A46 Prepared For: Changsha Wingjoy Technology Co., Ltd. Address: 508-1, Building 16, Phase 2, Xincheng Science and Technology Park, NO. 622, Qingshan Road, Changsha, China Manufacturer: Changsha Wingjoy Technology Co., Ltd. Address: 508-1, Building 16, Phase 2, Xincheng Science and Technology Park, NO. 622, Qingshan Road, Changsha, China Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Zhancheng, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2024-08-12 Sample Tested Date: 2024-08-12 to 2024-08-28 Issue Date: 2024-08-28 Report No.: BCTC2408810131E Test Standards: FCC Part15.247 ANSI C63.10-2013 Test Results: PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Min Zhi Cheng/ Project Handler Zero Zhou/Reviewer Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 3 of 85 Edition：B.2 Table Of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information And Test Setup ..................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 9 4.3 Support Equipment ............................................................................................... 9 4.4 Channel List ........................................................................................................ 10 4.5 Test Mode ........................................................................................................... 10 4.6 Table Of Parameters Of Text Software Setting ................................................... 10 5. Test Facility And Test Instrument Used ............................................................... 11 5.1 Test Facility ......................................................................................................... 11 5.2 Test Instrument Used .......................................................................................... 11 6. Conducted Emissions .......................................................................................... 13 6.1 Block Diagram Of Test Setup .............................................................................. 13 6.2 Limit .................................................................................................................... 13 6.3 Test procedure .................................................................................................... 13 6.4 EUT operating Conditions ................................................................................... 13 6.5 Test Result .......................................................................................................... 14 7. Radiated emissions ............................................................................................. 16 7.1 Block Diagram Of Test Setup .............................................................................. 16 7.2 Limit .................................................................................................................... 17 7.3 Test procedure .................................................................................................... 18 7.4 EUT operating Conditions ................................................................................... 19 7.5 Test Result .......................................................................................................... 19 8. Radiated Band Emission Measurement And Restricted Bands Of Operation ..... 25 8.1 Block Diagram Of Test Setup .............................................................................. 25 8.2 Limit .................................................................................................................... 25 8.3 Test procedure .................................................................................................... 26 8.4 EUT operating Conditions ................................................................................... 26 8.5 Test Result .......................................................................................................... 27 9. Spurious RF Conducted Emissions ..................................................................... 28 9.1 Block Diagram Of Test Setup .............................................................................. 28 9.2 Limit .................................................................................................................... 28 9.3 Test procedure .................................................................................................... 28 9.4 Test Result ...................................…

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Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 57 of 85 Edition：B.2 Test Graphs Power NVNT 1-DH1 2402MHz Power NVNT 1-DH1 2441MHz Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 58 of 85 Edition：B.2 Power NVNT 1-DH1 2480MHz Power NVNT 2-DH1 2402MHz Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 59 of 85 Edition：B.2 Power NVNT 2-DH1 2441MHz Power NVNT 2-DH1 2480MHz Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 60 of 85 Edition：B.2 Power NVNT 3-DH1 2402MHz Power NVNT 3-DH1 2441MHz Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 61 of 85 Edition：B.2 Power NVNT 3-DH1 2480MHz Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 62 of 85 Edition：B.2 12. Hopping Channel Separation 12.1 Block Diagram Of Test Setup 12.2 Limit Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hopping channel, whichever is greater. Alternatively, frequency hopping systems operating in the 2400-2483.5 MHz band may have hopping channel carrier frequencies that are separated by 25 kHz or two-thirds of the 20 dB bandwidth of the hopping channel, whichever is greater, provided the systems operate with an output power no greater than 0.125W. 12.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 30kHz. VBW = 100kHz , Span = 2.0MHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks of the adjacent channels. The limit is specified in one of the subparagraphs of this Section Submit this plot. 12.4 Test Result Mode Test Channel Separation (MHz) Limit(MHz) Result 1-DH1 Low 1.060 0.622 PASS 1-DH1 Middle 1.034 0.617 PASS 1-DH1 High 1.032 0.619 PASS 2-DH1 Low 0.998 0.843 PASS 2-DH1 Middle 1.002 0.851 PASS 2-DH1 High 1.004 0.825 PASS 3-DH1 Low 0.996 0.817 PASS 3-DH1 Middle 0.992 0.856 PASS 3-DH1 High 0.996 0.857 PASS Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 63 of 85 Edition：B.2 Test Graphs CFS NVNT 1-DH1 2402MHz CFS NVNT 1-DH1 2441MHz Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 64 of 85 Edition：B.2 CFS NVNT 1-DH1 2480MHz CFS NVNT 2-DH1 2402MHz Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 65 of 85 Edition：B.2 CFS NVNT 2-DH1 2441MHz CFS NVNT 2-DH1 2480MHz Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 66 of 85 Edition：B.2 CFS NVNT 3-DH1 2402MHz CFS NVNT 3-DH1 2441MHz Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 67 of 85 Edition：B.2 CFS NVNT 3-DH1 2480MHz Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 68 of 85 Edition：B.2 13. Number Of Hopping Frequency 13.1 Block Diagram Of Test Setup 13.2 Limit Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. 13.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 100kHz. VBW = 300kHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. It may prove necessary to break the span up to sections. in order to clearly show all of the hopping frequencies. The limit is specified in one of the subparagraphs of this Section. 4. Set the spectrum analyzer: Start Frequency = 2.4GHz, Stop Frequency = 2.4835GHz. Sweep=auto; 13.4 Test Result Condition Mode Hopping Number Limit Verdict NVNT 1-DH1 79 15 Pass NVNT 2-DH1 79 15 Pass NVNT 3-DH1 79 15 Pass Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 69 of 85 Edition：B.2 Test Graphs Hopping No. NVNT 1-DH1 2441MHz Hopping No. NVNT 2-DH1 2441MHz Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 70 of 85 Edition：B.2 Hopping No. NVNT 3-DH1 2441MHz Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 71 of 85 Edition：B.2 14. Dwell Time 14.1 Block Diagram Of Test Setup 14.2 Limit Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. The average time of occupancy on any channel shall not be greater than 0.4 seconds within a period of 0.4 seconds multiplied by the number of hopping channels employed. Frequency hopping systems may avoid or suppress transmissions on a particular hopping frequency provided that a minimum of 15 channels are used. 14.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set spectrum analyzer span = 0. Centred on a hopping channel; 3. Set RBW = 1MHz and VBW = 3MHz.Sweep = as necessary to capture the entire dwell time per hopping channel. Set the EUT for DH5, DH3 and DH1 packet transmitting. 4. Use the marker-delta function to determine the dwell time. If this value varies with different modes of operation (e.g.. data rate. modulation format. etc.). repeat this test for each variation. The limit is specified in one of the subparagraphs of this Section. Submit this plot(s). 14.4 Test Result Mode Frequency (MHz) Pulse Time (ms) Total Dwell Time (ms) Burst Count Period Time (ms) Limit (ms) Verdict 1-DH1 2441 0.379 120.522 318 31600 400 Pass 1-DH3 2441 1.644 263.04 160 31600 400 Pass 1-DH5 2441 2.892 294.984 102 31600 400 Pass 2-DH1 2441 0.387 123.066 318 31600 400 Pass 2-DH3 2441 1.638 258.804 158 31600 400 Pass 2-DH5 2441 2.886 291.486 101 31600 400 Pass 3-DH1 2441 0.386 121.204 314 31600 400 Pass 3-DH3 2441 1.637 258.646 158 31600 400 Pass 3-DH5 2441 2.886 291.486 101 31600 400 Pass Note: Total Dwell Time (ms) = Pulse Time (ms)*Burst Count Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 72 of 85 Edition：B.2 Test Graphs Dwell NVNT 1-DH1 2441MHz One Burst Dwell NVNT 1-DH1 2441MHz Accumulated Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 73 of 85 Edition：B.2 Dwell NVNT 1-DH3 2441MHz One Burst Dwell NVNT 1-DH3 2441MHz Accumulated Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 74 of 85 Edition：B.2 Dwell NVNT 1-DH5 2441MHz One Burst Dwell NVNT 1-DH5 2…

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Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 83 of 85 Edition：B.2 17. EUT Test Setup Photographs Conducted emissions Report No.: BCTC2408810131E No.：BCTC/RF-EMC-005 Page: 84 of 85 Edition：B.2 Radiated Measurement Photos