2BD7P-DZ015Karaoke Po Space Capsule Audio

ShenZhen WEIZHI 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: SUN BEYOND CONSULTING LTD FRN: 0033598426 Contact Name: Wenchao Xiang Street Address: OFFICE NO.448, 4TH FLOOR, 90 CANAL STREET City/Province/Zip: BOSTON, MA 02114 Telephone No: (151) 287-9145 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:2023/12/18 Signed by (Printed Name/Title): Wenchao Xiang /Manager 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: ShenZhen WEIZHI Technology Co., Ltd FRN: 0034640169 FCC ID: 2BD7P-DZ015 Contact Name: daonan Luo Street Address: 1st Floor, Building 7, Longbi Industrial Zone, Bantian Street, Longgang District, Shenzhen, China. Telephone No: 15112879145 Email: [email protected] Applicant Signature: Date: 2023-12-18 Signed by (Printed Name/Title): daonan Luo /Manager

ShenZhen WEIZHI Technology Co., Ltd 2023.12.18 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: 2BD7P-DZ015 [ShenZhen WEIZHI 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) daonan Luo ShenZhen WEIZHI Technology Co., Ltd 2023.11.28 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: 2BD7P-DZ015 [ShenZhen WEIZHI 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) daonan Luo

ShenZhen WEIZHI Technology Co., Ltd 2023.12.18 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: Karaoke Po Space Capsule Audio Trademark: N/A MODEL : DZ-015 DZ-001, DZ-004, DZ-005, DZ-006, DZ-007, DZ-010, DZ-011, DZ-012, DZ-013, DZ- 014, DZ-016, DZ-017, DZ-018, DZ-019, DZ-020, DZ-021, DZ-022, DZ-023, DZ-024 FCC ID : 2BD7P-DZ015 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 : daonan Luo /Manager Contact information / address: 1st Floor, Building 7, Longbi Industrial Zone, Bantian Street, Longgang District, Shenzhen, China.

ShenZhen WEIZHI Technology Co., Ltd 2023.12.18 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION 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 : daonan Luo /Manager Contact information / address: 1st Floor, Building 7, Longbi Industrial Zone, Bantian Street, Longgang District, Shenzhen, China.

ShenZhen WEIZHI Technology Co., Ltd Model Difference 2023/12/18 EUT NAME: Karaoke Po Space Capsule Audio FCC ID: 2BD7P-DZ015 MODEL : DZ-015 DZ-001, DZ-004, DZ-005, DZ-006, DZ-007, DZ-010, DZ-011, DZ-012, DZ-013, DZ- 014, DZ-016, DZ-017, DZ-018, DZ-019, DZ-020, DZ-021, DZ-022, DZ-023, DZ-024 All the model are the same circuit and RF module, except appearance color and model name. Regards Sincerely Client’s signature: Client’s name / title : daonan Luo /Manager Contact information / address: 1st Floor, Building 7, Longbi Industrial Zone, Bantian Street, Longgang District, Shenzhen, China.

External Photos

Size:20*10mm FCC ID: 2BD7P-DZ015 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 Label location

Internal Photos Antenna

RF EXPOSURE EVALUATION METHOD FCC ID: 2BD7P-DZ015 Applicable standard： In accordance with FCC 47 CFR part 2 (2.1093) this device has been defined as a portable device which is defined as a transmitting device designed to be used so that the radiating structure(s) of the device is/are within 20 centimeters of the body of the user. Portable devices must be evaluated using the specified in FCC 47 CFR part 2 (2.1093) and ANSI/IEEEC95.1-1992. and had been tested in accordance with the measurement methods and procedures specified in IEEE 1528-2003. Per FCC KDB 447498 D01 v06, the 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances s 50 mm are determined by: SAR Test Exclusion Thresholds for 100 MHz – 6 GHz and ≤ 50 mm Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. 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 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 is applied to determine SAR test exclusion. BT GFSK 2402 -0.7 21 GFSK 2441 -1.02 21 GFSK 2480 -1.29 21 π/ 4 DQPSK 2402 0.37 21 π/ 4 DQPSK 2441 0.86 21 π/ 4 DQPSK 2480 0.68 21 8DPSK 2402 1.25 21 8DPSK 2441 1.63 21 8DPSK 2480 1.45 21 max possible output power (PK,conducted)：2±1dBm -0.58dBi logarithmic terms convert to numeric result is nearly 0.875 3dBm=2.00mW 2402MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 2.00/5*√2.402=0.62≤3.0 2441MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 2.00/5*√2.441=0.62≤3.0 2480MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 2.00/5*√2.48=0.63≤3.0 Conclusion: 1. [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] * [√f(GHz)] < 3.0. 2. SAR Test Exclusion Thresholds is 3.0 for separation distance 5mm. Therefore, SAR test is not required.

Inverted F Antenna Specification Summary ITEM ANT SPEC Model Name 2.4G ANT Center Frequency Horizontal Vertical 2400MHz 2400MHz 2500MHz 2400MHz 2400MHz 2500MHz -1.26 -0.76 -0.58 -5.25 -2.46 -1.86 MAX. Gain -0.58dBi Polarization Horizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance 50 Ohm Antenna Length 38.20mm Manufacture ShenZhen WEIZHI Technology Co., Ltd Address 1st Floor, Building 7, Longbi Industrial Zone, Bantian Street, Longgang District, Shenzhen, China. Antenna Photo & Length (mm) Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Frequency (MHz) Gain(dBi) Max Min Avg 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 Frequency (MHz) Gain(dBi) 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 80 Edition：B.1 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2312935426E Applicant: ShenZhen WEIZHI Technology Co., Ltd Product Name: Karaoke Po Space Capsule Audio Test Model: DZ-015 Tested Date: 2023-12-05 to 2023-12-19 Issued Date: 2023-12-19 Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 2 of 80 Edition：B.1 FCC ID:2BD7P-DZ015 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: Karaoke Po Space Capsule Audio Trademark: N/A Model/Type Reference: DZ-015 DZ-001, DZ-004, DZ-005, DZ-006, DZ-007, DZ-010, DZ-011, DZ-012, DZ-013, DZ-014, DZ-016, DZ-017, DZ-018, DZ-019, DZ-020, DZ-021, DZ-022, DZ-023, DZ-024 Prepared For: ShenZhen WEIZHI Technology Co., Ltd Address: 1st Floor, Building 7, Longbi Industrial Zone, Bantian Street, Longgang District, Shenzhen, China. Manufacturer: ShenZhen WEIZHI Technology Co., Ltd Address: 1st Floor, Building 7, Longbi Industrial Zone, Bantian Street, Longgang District, Shenzhen, 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: 2023-12-05 Sample tested Date: 2023-12-05 to 2023-12-19 Issue Date: 2023-12-19 Report No.: BCTC2312935426E Test Standards FCC Part15.247 ANSI C63.10-2013 Test Results PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Tang Changyu/ Project Handler Zero Zhou/Reviewer Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 3 of 80 Edition：B.1 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 ...................................................................................... 8 4.3 Support Equipment ............................................................................................... 9 4.4 Channel List .......................................................................................................... 9 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 ..... 23 8.1 Block Diagram Of Test Setup .............................................................................. 23 8.2 Limit .................................................................................................................... 23 8.3 Test procedure .................................................................................................... 24 8.4 EUT operating Conditions ................................................................................... 24 8.5 Test Result .......................................................................................................... 25 9. Spurious RF Conducted Emissions ..................................................................... 26 9.1 Block Diagram Of Test Setup .............................................................................. 26 9.2 Limit .................................................................................................................... 26 9.3 Test procedure ............................…

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Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 56 of 80 Edition：B.1 Test Graphs Power NVNT 1-DH1 2402MHz Power NVNT 1-DH1 2441MHz Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 57 of 80 Edition：B.1 Power NVNT 1-DH1 2480MHz Power NVNT 2-DH1 2402MHz Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 58 of 80 Edition：B.1 Power NVNT 2-DH1 2441MHz Power NVNT 2-DH1 2480MHz Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 59 of 80 Edition：B.1 Power NVNT 3-DH1 2402MHz Power NVNT 3-DH1 2441MHz Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 60 of 80 Edition：B.1 Power NVNT 3-DH1 2480MHz Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 61 of 80 Edition：B.1 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 Condition Mode Hopping Freq1 (MHz) Hopping Freq2 (MHz) HFS (MHz) Limit (MHz) Verdict NVNT 1-DH1 2401.99 2402.99 1 0.579 Pass NVNT 1-DH1 2440.988 2441.988 1 0.497 Pass NVNT 1-DH1 2478.984 2479.984 1 0.503 Pass NVNT 2-DH1 2401.99 2402.99 1 0.83 Pass NVNT 2-DH1 2440.986 2441.988 1.002 0.829 Pass NVNT 2-DH1 2478.984 2479.984 1 0.826 Pass NVNT 3-DH1 2401.99 2402.99 1 0.808 Pass NVNT 3-DH1 2440.986 2441.988 1.002 0.805 Pass NVNT 3-DH1 2478.984 2479.984 1 0.801 Pass Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 62 of 80 Edition：B.1 Test Graphs CFS NVNT 1-DH1 2402MHz CFS NVNT 1-DH1 2441MHz Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 63 of 80 Edition：B.1 CFS NVNT 1-DH1 2480MHz CFS NVNT 2-DH1 2402MHz Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 64 of 80 Edition：B.1 CFS NVNT 2-DH1 2441MHz CFS NVNT 2-DH1 2480MHz Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 65 of 80 Edition：B.1 CFS NVNT 3-DH1 2402MHz CFS NVNT 3-DH1 2441MHz Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 66 of 80 Edition：B.1 CFS NVNT 3-DH1 2480MHz Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 67 of 80 Edition：B.1 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.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 68 of 80 Edition：B.1 Test Graphs Hopping No. NVNT 1-DH1 2441MHz Hopping No. NVNT 2-DH1 2441MHz Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 69 of 80 Edition：B.1 Hopping No. NVNT 3-DH1 2441MHz Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 70 of 80 Edition：B.1 14. Dwell Time 14.1 Block Diagram Of Test Setup 14.2 Limit ≤0.4 Second 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 Condition Mode Frequency (MHz) Pulse Time (ms) Total Dwell Time (s) Limit (s) Verdict NVNT 1-DH1 2441 0.412 0.132 0.4 Pass NVNT 1-DH3 2441 1.668 0.267 0.4 Pass NVNT 1-DH5 2441 2.916 0.332 0.4 Pass NVNT 2-DH1 2441 0.422 0.135 0.4 Pass NVNT 2-DH3 2441 1.668 0.267 0.4 Pass NVNT 2-DH5 2441 2.922 0.316 0.4 Pass NVNT 3-DH1 2441 0.424 0.136 0.4 Pass NVNT 3-DH3 2441 1.668 0.267 0.4 Pass NVNT 3-DH5 2441 2.925 0.322 0.4 Pass Note1: Total Dwell Time (ms) = Pulse Time (ms)*Burst Count Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 71 of 80 Edition：B.1 Test Graphs Dwell NVNT 1-DH1 2441MHz One Burst Dwell NVNT 1-DH3 2441MHz One Burst Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 72 of 80 Edition：B.1 Dwell NVNT 1-DH5 2441MHz One Burst Dwell NVNT 2-DH1 2441MHz One Burst Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 73 of 80 Edition：B.1 Dwell NVNT 2-DH3 2441MHz One Burst Dwell NVNT 2-DH5 2441MHz One Burst Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 74 of 80 Edition：B.1 Dwell NVNT 3-DH1 2441MHz One Burst Dwell NVNT 3-DH3 2441MHz One Burst Report No.: BCTC2312935426E No.：BCTC/RF-EMC-005 Page: 75 of 80 Edition：B.1 Dwell NVNT 3-DH5 2441MHz One Burst Report No.: BCTC2312935426E No.：BCTC/RF-EMC-00…

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17. EUT Test Setup Photographs Conducted Emissions Photo Radiated Measurement Photos