2BTBM-TC002U-Clock II

Internal Photographs BT+2.4G WIFI Antenna 0

Setup Photographs Radiated Band edge and Spurious Emission AC Power Line Conducted Emission

Antenna Specification Customer Name: ___________ Project Model: Ulanzi_I008_FPC2.4G_V2.0 Antenna Type: WIFI FPC Antenna Issue Date: 2026-4-2 Manufacturer Approval Section: Prepared RF Structure Approved Date Customer Approval Section: Checked Reviewed Approved Date Approval Sheet Revision History Version Date Change Description Remarks R/A 2026-4-2 Initial release 一、Antenna Picture 二、Test Environment 2.1 Environmental Treatment: None N/A 三、 Antenna Matching 3.1 Antenna 四、Product Specifications Passive Electrical Specifications Frequency Range (MHz) 2400–2500 MHz, 5100–5800 MHz Input Impedance (Ω) 50 VSWR ≤ 2.89 Gain (dBi) < 3.5 Polarization Type Linear Polarization 五、Electrical Performance Report ● VSWR Plot Frequency (MHz) 2400 2450 2500 5150 5550 5850 VSWR 1.62 1.11 1.31 1.79 2.89 2.21 ● Efficiency Frequency (MHz) 2400 2450 2500 5150 5550 5850 Efficiency (%) 42.97 42.08 43.28 27.49 20.36 27.30 ● Gain Frequency (MHz) 2400 2450 2500 5150 5550 5850 Gain (dBi) 1.95 2.26 3.18 -0.34 -1.31 -0.14 ● Radiation Patterns WiFi Antenna @ 2400 MHz WiFi Antenna @ 2500 MHz WiFi Antenna @ 5150 MHz WiFi Antenna @ 5850 MHz 六、Engineering Drawing

TRF No.: 04-E001-0B TRF Originator: GTG TRF Date: 2023-12-13 Web: www.gtggroup.com E-mail: [email protected] Tel.: 86-400 755 8988 CFR 47 FCC PART 15 SUBPART C TEST REPORT For U-Clock II MODEL NUMBER: TC002, TC002-W, TC002-B, TC002-G, TC002-U, TC002-X REPORT NUMBER: E04A26050216F00902 ISSUE DATE: July 06, 2026 FCC ID: 2BTBM-TC002 Prepared for Shenzhen VIJIM Technology Co., Ltd. A1705, Building A, Galaxy World, No.1 Yabao Road, Bantian Street, Longgang District, Shenzhen Prepared by Guangdong Global Testing Technology Co., Ltd. Room 101-105, 203-210, Building 1, No.2, Keji 8 Road, Songshan Lake Park, Dongguan city, Guangdong, People’s Republic of China, 523808 This report is based on a single evaluation of the submitted sample(s) of the above mentioned product, it does not imply an assessment of the production of the products. This report shall not be reproduced, except in full, without the written approval of Guangdong Global Testing Technology Co., Ltd. REPORT NO.: E04A26050216F00902 Page 2 of 42 TRF No.: 04-E001-0B Global Testing , Great Quality. Revision History Rev. Issue Date Revisions Revised By V0 July 06, 2026 Initial Issue REPORT NO.: E04A26050216F00902 Page 3 of 42 TRF No.: 04-E001-0B Global Testing , Great Quality. Summary of Test Results Test Item Clause Limit/Requirement Result Antenna Requirement N/A FCC Part 15.203/15.247 (c) RSS-GEN Clause 6.8 Pass AC Power Line Conducted Emission ANSI C63.10-2020, Clause 6.2 FCC Part 15.207 RSS-GEN Clause 8.8 Pass Conducted Output Power ANSI C63.10-2020, Clause 11.9.1.2 FCC Part 15.247 (b)(3) RSS-247 Clause 6.3.2 Pass 6dB Bandwidth and 99% Occupied Bandwidth ANSI C63.10-2020, Clause 11.8.2 FCC Part 15.247 (a)(2) RSS-247 Clause 6.3.1(a) ISED RSS-Gen Clause 6.7 Pass Power Spectral Density ANSI C63.10-2020, Clause 11.10.2 FCC Part 15.247 (e) RSS-247 Clause 6.3.1(b) Pass Conducted Band edge and spurious emission ANSI C63.10-2020, Clause 11.11 FCC Part 15.247(d) RSS-247 Clause 6.6 Pass Radiated Band edge and Spurious Emission ANSI C63.10-2020, Clause 11.12 FCC Part 15.247(d) FCC Part 15.205/15.209 RSS-247 Clause 6.6 RSS-GEN Clause 8.9 Pass Duty Cycle ANSI C63.10-2020, Clause 11.6 None; for reporting purposes only. Pass Note: In this whole report not applicable. *This test report is only published to and used by the applicant, and it is not for evidence purpose in China. *The measurement result for the sample received is <Pass> according to <CFR 47 FCC PART 15 SUBPART E> when <Accuracy Method> decision rule is applied. REPORT NO.: E04A26050216F00902 Page 4 of 42 TRF No.: 04-E001-0B Global Testing , Great Quality. CONTENTS 1. ATTESTATION OF TEST RESULTS ..................................................................................... 5 2. TEST METHODOLOGY ......................................................................................................... 6 3. FACILITIES AND ACCREDITATION ..................................................................................... 6 4. CALIBRATION AND UNCERTAINTY ................................................................................... 7 4.1. MEASURING INSTRUMENT CALIBRATION ........................................................... 7 4.2. MEASUREMENT UNCERTAINTY ............................................................................ 7 5. EQUIPMENT UNDER TEST .................................................................................................. 8 5.1. DESCRIPTION OF EUT ........................................................................................... 8 5.2. CHANNEL LIST ........................................................................................................ 8 5.3. MAXIMUM CONDUCTED OUTPUT POWER ........................................................... 9 5.4. TEST CHANNEL CONFIGURATION ........................................................................ 9 5.5. THE WORSE CASE POWER SETTING PARAMETER ............................................ 9 5.6. DESCRIPTION OF AVAILABLE ANTENNAS ........................................................... 9 5.7. SUPPORT UNITS FOR SYSTEM TEST ................................................................... 9 5.8. SETUP DIAGRAM .................................................................................................. 10 6. MEASURING EQUIPMENT AND SOFTWARE USED......................................................... 11 7. ANTENNA PORT TEST RESULTS ..................................................................................... 13 7.1. Conducted Output Power ........................................................................................ 13 7.2. 6dB Bandwidth and 99% Occupied Bandwidth ....................................................... 14 7.3. Power Spectral Density ........................................................................................... 16 7.4. Conducted Band edge and spurious emission ........................................................ 17 7.5. Duty Cycle .............................................................................................................. 19 8. RADIATED TEST RESULTS ............................................................................................... 20 8.1. Radiated Band edge and Spurious Emission .......................................................... 25 9. ANTENNA REQUIREMENT ................................................................................................ 39 10. AC POWER LINE CONDUCTED EMISSION ......................................................... 40 REPORT NO.: E04A26050216F00902 Page 5 of 42 TRF No.: 04-E001-0B Global Testing , Great Quality. 1. ATTESTATION OF TEST RESULTS Applicant Information Company Name: Shenzhen VIJIM Technology Co., Ltd. Address: A1705, Building A, Galaxy World, No.1 Yabao Road, Bantian Street, Longgang District, Shenzhen Manufacturer Information Company Name: Shenzhen VIJIM Technology Co., Ltd. Address: A1705, Building A, Galaxy World, No.1 Yabao Road, Bantian Str…

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1 / 32 Appendix B Duty Cycle Condition Mode Frequency (MHz) Antenna Duty Cycle (%) Correction Factor (dB) 1/T (kHz) NVNT BLE 1M 2402 Ant1 85.28 0.69 0.47 NVNT BLE 1M 2440 Ant1 85.23 0.69 0.47 NVNT BLE 1M 2480 Ant1 85.28 0.69 0.47 NVNT BLE 2M 2402 Ant1 56.72 2.46 0.94 NVNT BLE 2M 2440 Ant1 56.8 2.46 0.94 NVNT BLE 2M 2480 Ant1 56.8 2.46 0.94 2 / 32 Duty Cycle NVNT BLE 1M 2402MHz Ant1 Duty Cycle NVNT BLE 1M 2440MHz Ant1 3 / 32 Duty Cycle NVNT BLE 1M 2480MHz Ant1 Duty Cycle NVNT BLE 2M 2402MHz Ant1 4 / 32 Duty Cycle NVNT BLE 2M 2440MHz Ant1 Duty Cycle NVNT BLE 2M 2480MHz Ant1 5 / 32 Maximum Peak Conducted Output Power Condition Mode Frequency (MHz) Antenna Conducted Power (dBm) Total Conducted Power (W) Limit Conducted (dBm) Verdict NVNT BLE 1M 2402 Ant1 -0.52 0.00089 30 Pass NVNT BLE 1M 2440 Ant1 -1.24 0.00075 30 Pass NVNT BLE 1M 2480 Ant1 1.13 0.0013 30 Pass NVNT BLE 2M 2402 Ant1 -0.5 0.00089 30 Pass NVNT BLE 2M 2440 Ant1 -1.22 0.00076 30 Pass NVNT BLE 2M 2480 Ant1 1.13 0.0013 30 Pass 6 / 32 Peak Power NVNT BLE 1M 2402MHz Ant1 Peak Power NVNT BLE 1M 2440MHz Ant1 7 / 32 Peak Power NVNT BLE 1M 2480MHz Ant1 Peak Power NVNT BLE 2M 2402MHz Ant1 8 / 32 Peak Power NVNT BLE 2M 2440MHz Ant1 Peak Power NVNT BLE 2M 2480MHz Ant1 9 / 32 -6dB Bandwidth Condition Mode Frequency (MHz) Antenna -6 dB Bandwidth (MHz) Limit -6 dB Bandwidth (MHz) Verdict NVNT BLE 1M 2402 Ant1 0.6504 0.5 Pass NVNT BLE 1M 2440 Ant1 0.7066 0.5 Pass NVNT BLE 1M 2480 Ant1 0.6946 0.5 Pass NVNT BLE 2M 2402 Ant1 1.241 0.5 Pass NVNT BLE 2M 2440 Ant1 1.235 0.5 Pass NVNT BLE 2M 2480 Ant1 1.348 0.5 Pass 10 / 32 -6dB Bandwidth NVNT BLE 1M 2402MHz Ant1 -6dB Bandwidth NVNT BLE 1M 2440MHz Ant1 11 / 32 -6dB Bandwidth NVNT BLE 1M 2480MHz Ant1 -6dB Bandwidth NVNT BLE 2M 2402MHz Ant1 12 / 32 -6dB Bandwidth NVNT BLE 2M 2440MHz Ant1 -6dB Bandwidth NVNT BLE 2M 2480MHz Ant1 13 / 32 Occupied Channel Bandwidth Condition Mode Frequency (MHz) Antenna 99% OBW (MHz) NVNT BLE 1M 2402 Ant1 1.0271 NVNT BLE 1M 2440 Ant1 1.0266 NVNT BLE 1M 2480 Ant1 1.0307 NVNT BLE 2M 2402 Ant1 2.0531 NVNT BLE 2M 2440 Ant1 2.0591 NVNT BLE 2M 2480 Ant1 2.0648 14 / 32 OBW NVNT BLE 1M 2402MHz Ant1 OBW NVNT BLE 1M 2440MHz Ant1 15 / 32 OBW NVNT BLE 1M 2480MHz Ant1 OBW NVNT BLE 2M 2402MHz Ant1 16 / 32 OBW NVNT BLE 2M 2440MHz Ant1 OBW NVNT BLE 2M 2480MHz Ant1 17 / 32 Maximum Power Spectral Density Level Condition Mode Frequency (MHz) Antenna Conducted PSD (dBm/3kHz) Duty Factor (dB) Total PSD (dBm/3kHz) Limit (dBm/3kHz) Verdict NVNT BLE 1M 2402 Ant1 -16.7 0 -16.7 8 Pass NVNT BLE 1M 2440 Ant1 -17.45 0 -17.45 8 Pass NVNT BLE 1M 2480 Ant1 -15.03 0 -15.03 8 Pass NVNT BLE 2M 2402 Ant1 -19.8 0 -19.8 8 Pass NVNT BLE 2M 2440 Ant1 -20.56 0 -20.56 8 Pass NVNT BLE 2M 2480 Ant1 -18.15 0 -18.15 8 Pass 18 / 32 PSD NVNT BLE 1M 2402MHz Ant1 PSD NVNT BLE 1M 2440MHz Ant1 19 / 32 PSD NVNT BLE 1M 2480MHz Ant1 PSD NVNT BLE 2M 2402MHz Ant1 20 / 32 PSD NVNT BLE 2M 2440MHz Ant1 PSD NVNT BLE 2M 2480MHz Ant1 21 / 32 Band Edge Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT BLE 1M 2402 Ant1 -54.12 -20 Pass NVNT BLE 1M 2480 Ant1 -58.35 -20 Pass NVNT BLE 2M 2402 Ant1 -31.77 -20 Pass NVNT BLE 2M 2480 Ant1 -55.93 -20 Pass 22 / 32 Band Edge NVNT BLE 1M 2402MHz Ant1 Ref Band Edge NVNT BLE 1M 2402MHz Ant1 Emission 23 / 32 Band Edge NVNT BLE 1M 2480MHz Ant1 Ref Band Edge NVNT BLE 1M 2480MHz Ant1 Emission 24 / 32 Band Edge NVNT BLE 2M 2402MHz Ant1 Ref Band Edge NVNT BLE 2M 2402MHz Ant1 Emission 25 / 32 Band Edge NVNT BLE 2M 2480MHz Ant1 Ref Band Edge NVNT BLE 2M 2480MHz Ant1 Emission 26 / 32 Conducted RF Spurious Emission Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT BLE 1M 2402 Ant1 -49.01 -20 Pass NVNT BLE 1M 2440 Ant1 -48.4 -20 Pass NVNT BLE 1M 2480 Ant1 -50.28 -20 Pass NVNT BLE 2M 2402 Ant1 -47.59 -20 Pass NVNT BLE 2M 2440 Ant1 -46.26 -20 Pass NVNT BLE 2M 2480 Ant1 -48.96 -20 Pass 27 / 32 Tx. Spurious NVNT BLE 1M 2402MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2402MHz Ant1 Emission 28 / 32 Tx. Spurious NVNT BLE 1M 2440MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2440MHz Ant1 Emission 29 / 32 Tx. Spurious NVNT BLE 1M 2480MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2480MHz Ant1 Emission 30 / 32 Tx. Spurious NVNT BLE 2M 2402MHz Ant1 Ref Tx. Spurious NVNT BLE 2M 2402MHz Ant1 Emission 31 / 32 Tx. Spurious NVNT BLE 2M 2440MHz Ant1 Ref Tx. Spurious NVNT BLE 2M 2440MHz Ant1 Emission 32 / 32 Tx. Spurious NVNT BLE 2M 2480MHz Ant1 Ref Tx. Spurious NVNT BLE 2M 2480MHz Ant1 Emission

TRF No.: 04-E001-0B TRF Originator: GTG TRF Date: 2023-12-13 Web: www.gtggroup.com E-mail: [email protected] Tel.: 86-400 755 8988 CFR 47 FCC PART 15 SUBPART C TEST REPORT For U-Clock II MODEL NUMBER: TC002, TC002-W, TC002-B, TC002-G, TC002-U, TC002-X REPORT NUMBER: E04A26050216F00901 ISSUE DATE: July 06, 2026 FCC ID: 2BTBM-TC002 Prepared for Shenzhen VIJIM Technology Co., Ltd. A1705, Building A, Galaxy World, No.1 Yabao Road, Bantian Street, Longgang District, Shenzhen Prepared by Guangdong Global Testing Technology Co., Ltd. Room 101-105, 203-210, Building 1, No.2, Keji 8 Road, Songshan Lake Park, Dongguan city, Guangdong, People’s Republic of China, 523808 This report is based on a single evaluation of the submitted sample(s) of the above mentioned product, it does not imply an assessment of the production of the products. This report shall not be reproduced, except in full, without the written approval of Guangdong Global Testing Technology Co., Ltd. REPORT NO.: E04A26050216F00901 Page 2 of 48 TRF No.: 04-E001-0B Global Testing , Great Quality. Revision History Rev. Issue Date Revisions Revised By V0 July 06, 2026 Initial Issue REPORT NO.: E04A26050216F00901 Page 3 of 48 TRF No.: 04-E001-0B Global Testing , Great Quality. Summary of Test Results Test Item Clause Limit/Requirement Result Antenna Requirement N/A FCC Part 15.203/15.247 (c) RSS-GEN Clause 6.8 Pass AC Power Line Conducted Emission ANSI C63.10-2020, Clause 6.2 FCC Part 15.207 RSS-GEN Clause 8.8 Pass Conducted Output Power ANSI C63.10-2020, Clause 11.9.2.3.2 FCC Part 15.247 (b)(3) RSS-247 Clause 6.3.2 Pass 6dB Bandwidth and 99% Occupied Bandwidth ANSI C63.10-2020, Clause 11.8.2 FCC Part 15.247 (a)(2) RSS-247 Clause 6.3.1(a) ISED RSS-Gen Clause 6.7 Pass Power Spectral Density ANSI C63.10-2020, Clause 11.10.5 FCC Part 15.247 (e) RSS-247 Clause 6.3.1(b) Pass Conducted Band edge and spurious emission ANSI C63.10-2020, Clause 11.11 FCC Part 15.247(d) RSS-247 Clause 6.6 Pass Radiated Band edge and Spurious Emission ANSI C63.10-2020, Clause 11.12 FCC Part 15.247(d) FCC Part 15.205/15.209 RSS-247 Clause 6.6 RSS-GEN Clause 8.9 Pass Duty Cycle ANSI C63.10-2020, Clause 11.6 None; for reporting purposes only. Pass Note: In this whole report not applicable. *This test report is only published to and used by the applicant, and it is not for evidence purpose in China. *The measurement result for the sample received is <Pass> according to <CFR 47 FCC PART 15 SUBPART E> when <Accuracy Method> decision rule is applied. REPORT NO.: E04A26050216F00901 Page 4 of 48 TRF No.: 04-E001-0B Global Testing , Great Quality. CONTENTS 1. ATTESTATION OF TEST RESULTS ..................................................................................... 5 2. TEST METHODOLOGY ......................................................................................................... 6 3. FACILITIES AND ACCREDITATION ..................................................................................... 6 4. CALIBRATION AND UNCERTAINTY ................................................................................... 7 4.1. MEASURING INSTRUMENT CALIBRATION ........................................................... 7 4.2. MEASUREMENT UNCERTAINTY ............................................................................ 7 5. EQUIPMENT UNDER TEST .................................................................................................. 8 5.1. DESCRIPTION OF EUT ........................................................................................... 8 5.2. CHANNEL LIST ........................................................................................................ 8 5.3. MAXIMUM CONDUCTED OUTPUT POWER ........................................................... 9 5.4. TEST CHANNEL CONFIGURATION ........................................................................ 9 5.5. THE WORSE CASE POWER SETTING PARAMETER ............................................ 9 5.6. DESCRIPTION OF AVAILABLE ANTENNAS ......................................................... 10 5.7. SUPPORT UNITS FOR SYSTEM TEST ................................................................. 10 5.8. SETUP DIAGRAM .................................................................................................. 10 6. MEASURING EQUIPMENT AND SOFTWARE USED......................................................... 12 7. ANTENNA PORT TEST RESULTS ..................................................................................... 14 7.1. Conducted Output Power ........................................................................................ 14 7.2. 6dB Bandwidth and 99% Occupied Bandwidth ....................................................... 15 7.3. Power Spectral Density ........................................................................................... 17 7.4. Conducted Band edge and spurious emission ........................................................ 18 7.5. Duty Cycle .............................................................................................................. 20 8. RADIATED TEST RESULTS ............................................................................................... 21 8.1. Radiated Band edge and Spurious Emission .......................................................... 27 9. ANTENNA REQUIREMENT ................................................................................................ 45 10. AC POWER LINE CONDUCTED EMISSION ......................................................... 46 REPORT NO.: E04A26050216F00901 Page 5 of 48 TRF No.: 04-E001-0B Global Testing , Great Quality. 1. ATTESTATION OF TEST RESULTS Applicant Information Company Name: Shenzhen VIJIM Technology Co., Ltd. Address: A1705, Building A, Galaxy World, No.1 Yabao Road, Bantian Street, Longgang District, Shenzhen Manufacturer Information Company Name: Shenzhen VIJIM Technology Co., Ltd. Address: A1705, Building A, Galaxy World, No.1 Yabao Road, Bantian Str…

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1 / 51 Appendix A Duty Cycle Condition Mode Frequency (MHz) Antenna Duty Cycle (%) Correction Factor (dB) 1/T (kHz) NVNT b 2412 Ant1 54.77 2.61 0.08 NVNT b 2437 Ant1 54.7 2.62 0.08 NVNT b 2462 Ant1 54.77 2.61 0.08 NVNT g 2412 Ant1 16.79 7.75 0.49 NVNT g 2437 Ant1 16.11 7.93 0.5 NVNT g 2462 Ant1 16.79 7.75 0.49 NVNT n20 2412 Ant1 15.83 8 0.53 NVNT n20 2437 Ant1 15.75 8.03 0.53 NVNT n20 2462 Ant1 15.75 8.03 0.53 NVNT n40 2422 Ant1 8.67 10.62 1.04 NVNT n40 2437 Ant1 8.42 10.74 1.08 NVNT n40 2452 Ant1 8.42 10.74 1.08 2 / 51 Duty Cycle NVNT b 2412MHz Ant1 Duty Cycle NVNT b 2437MHz Ant1 3 / 51 Duty Cycle NVNT b 2462MHz Ant1 Duty Cycle NVNT g 2412MHz Ant1 4 / 51 Duty Cycle NVNT g 2437MHz Ant1 Duty Cycle NVNT g 2462MHz Ant1 5 / 51 Duty Cycle NVNT n20 2412MHz Ant1 Duty Cycle NVNT n20 2437MHz Ant1 6 / 51 Duty Cycle NVNT n20 2462MHz Ant1 Duty Cycle NVNT n40 2422MHz Ant1 7 / 51 Duty Cycle NVNT n40 2437MHz Ant1 Duty Cycle NVNT n40 2452MHz Ant1 8 / 51 Maximum Average Conducted Output Power Condition Mode Frequency (MHz) Antenna Total Conducted Power (dBm) Total Conducted Power (W) Limit Conducted(dBm) Verdict NVNT b 2412 Ant1 15.94 0.03926 30 Pass NVNT b 2437 Ant1 15 0.03162 30 Pass NVNT b 2462 Ant1 15.88 0.03873 30 Pass NVNT g 2412 Ant1 15.5 0.03548 30 Pass NVNT g 2437 Ant1 16.58 0.0455 30 Pass NVNT g 2462 Ant1 16.09 0.04064 30 Pass NVNT n20 2412 Ant1 15.52 0.03565 30 Pass NVNT n20 2437 Ant1 15.18 0.03296 30 Pass NVNT n20 2462 Ant1 14.76 0.02992 30 Pass NVNT n40 2422 Ant1 12.14 0.01637 30 Pass NVNT n40 2437 Ant1 12.95 0.01972 30 Pass NVNT n40 2452 Ant1 12.71 0.01866 30 Pass 9 / 51 -6dB Bandwidth Condition Mode Frequency (MHz) Antenna -6 dB Bandwidth (MHz) Limit -6 dB Bandwidth (MHz) Verdict NVNT b 2412 Ant1 10.13 0.5 Pass NVNT b 2437 Ant1 10.13 0.5 Pass NVNT b 2462 Ant1 10.14 0.5 Pass NVNT g 2412 Ant1 16.22 0.5 Pass NVNT g 2437 Ant1 16.14 0.5 Pass NVNT g 2462 Ant1 16.15 0.5 Pass NVNT n20 2412 Ant1 17.46 0.5 Pass NVNT n20 2437 Ant1 17.36 0.5 Pass NVNT n20 2462 Ant1 16.97 0.5 Pass NVNT n40 2422 Ant1 35.82 0.5 Pass NVNT n40 2437 Ant1 36.37 0.5 Pass NVNT n40 2452 Ant1 35.94 0.5 Pass 10 / 51 -6dB Bandwidth NVNT b 2412MHz Ant1 -6dB Bandwidth NVNT b 2437MHz Ant1 11 / 51 -6dB Bandwidth NVNT b 2462MHz Ant1 -6dB Bandwidth NVNT g 2412MHz Ant1 12 / 51 -6dB Bandwidth NVNT g 2437MHz Ant1 -6dB Bandwidth NVNT g 2462MHz Ant1 13 / 51 -6dB Bandwidth NVNT n20 2412MHz Ant1 -6dB Bandwidth NVNT n20 2437MHz Ant1 14 / 51 -6dB Bandwidth NVNT n20 2462MHz Ant1 -6dB Bandwidth NVNT n40 2422MHz Ant1 15 / 51 -6dB Bandwidth NVNT n40 2437MHz Ant1 -6dB Bandwidth NVNT n40 2452MHz Ant1 16 / 51 Occupied Channel Bandwidth Condition Mode Frequency (MHz) Antenna 99% OBW (MHz) NVNT b 2412 Ant1 14.503 NVNT b 2437 Ant1 14.515 NVNT b 2462 Ant1 14.498 NVNT g 2412 Ant1 16.486 NVNT g 2437 Ant1 16.597 NVNT g 2462 Ant1 16.528 NVNT n20 2412 Ant1 17.674 NVNT n20 2437 Ant1 17.73 NVNT n20 2462 Ant1 17.695 NVNT n40 2422 Ant1 36.211 NVNT n40 2437 Ant1 36.295 NVNT n40 2452 Ant1 36.265 17 / 51 OBW NVNT b 2412MHz Ant1 OBW NVNT b 2437MHz Ant1 18 / 51 OBW NVNT b 2462MHz Ant1 OBW NVNT g 2412MHz Ant1 19 / 51 OBW NVNT g 2437MHz Ant1 OBW NVNT g 2462MHz Ant1 20 / 51 OBW NVNT n20 2412MHz Ant1 OBW NVNT n20 2437MHz Ant1 21 / 51 OBW NVNT n20 2462MHz Ant1 OBW NVNT n40 2422MHz Ant1 22 / 51 OBW NVNT n40 2437MHz Ant1 OBW NVNT n40 2452MHz Ant1 23 / 51 Maximum Power Spectral Density Level Condition Mode Frequency (MHz) Antenna Conducted PSD (dBm/3kHz) Duty Factor (dB) Total PSD (dBm/3kHz) Limit (dBm/3kHz) Verdict NVNT b 2412 Ant1 -18.86 2.61 -16.25 8 Pass NVNT b 2437 Ant1 -19.29 2.62 -16.67 8 Pass NVNT b 2462 Ant1 -18.41 2.61 -15.8 8 Pass NVNT g 2412 Ant1 -24.13 7.75 -16.38 8 Pass NVNT g 2437 Ant1 -23.3 7.93 -15.37 8 Pass NVNT g 2462 Ant1 -23.89 7.75 -16.14 8 Pass NVNT n20 2412 Ant1 -25.03 8 -17.03 8 Pass NVNT n20 2437 Ant1 -24.98 8.03 -16.95 8 Pass NVNT n20 2462 Ant1 -25.7 8.03 -17.67 8 Pass NVNT n40 2422 Ant1 -33.13 10.62 -22.51 8 Pass NVNT n40 2437 Ant1 -32.49 10.74 -21.75 8 Pass NVNT n40 2452 Ant1 -32.74 10.74 -22 8 Pass 24 / 51 PSD NVNT b 2412MHz Ant1 PSD NVNT b 2437MHz Ant1 25 / 51 PSD NVNT b 2462MHz Ant1 PSD NVNT g 2412MHz Ant1 26 / 51 PSD NVNT g 2437MHz Ant1 PSD NVNT g 2462MHz Ant1 27 / 51 PSD NVNT n20 2412MHz Ant1 PSD NVNT n20 2437MHz Ant1 28 / 51 PSD NVNT n20 2462MHz Ant1 PSD NVNT n40 2422MHz Ant1 29 / 51 PSD NVNT n40 2437MHz Ant1 PSD NVNT n40 2452MHz Ant1 30 / 51 Band Edge Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT b 2412 Ant1 -41.29 -30 Pass NVNT b 2462 Ant1 -55.12 -30 Pass NVNT g 2412 Ant1 -31.46 -30 Pass NVNT g 2462 Ant1 -47.55 -30 Pass NVNT n20 2412 Ant1 -31.48 -30 Pass NVNT n20 2462 Ant1 -47.38 -30 Pass NVNT n40 2422 Ant1 -30.71 -30 Pass NVNT n40 2452 Ant1 -36.79 -30 Pass 31 / 51 Band Edge NVNT b 2412MHz Ant1 Ref Band Edge NVNT b 2412MHz Ant1 Emission 32 / 51 Band Edge NVNT b 2462MHz Ant1 Ref Band Edge NVNT b 2462MHz Ant1 Emission 33 / 51 Band Edge NVNT g 2412MHz Ant1 Ref Band Edge NVNT g 2412MHz Ant1 Emission 34 / 51 Band Edge NVNT g 2462MHz Ant1 Ref Band Edge NVNT g 2462MHz Ant1 Emission 35 / 51 Band Edge NVNT n20 2412MHz Ant1 Ref Band Edge NVNT n20 2412MHz Ant1 Emission 36 / 51 Band Edge NVNT n20 2462MHz Ant1 Ref Band Edge NVNT n20 2462MHz Ant1 Emission 37 / 51 Band Edge NVNT n40 2422MHz Ant1 Ref Band Edge NVNT n40 2422MHz Ant1 Emission 38 / 51 Band Edge NVNT n40 2452MHz Ant1 Ref Band Edge NVNT n40 2452MHz Ant1 Emission 39 / 51 Conducted RF Spurious Emission Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT b 2412 Ant1 -48.29 -30 Pass NVNT b 2437 Ant1 -47.7 -30 Pass NVNT b 2462 Ant1 -48.42 -30 Pass NVNT g 2412 Ant1 -44.47 -30 Pass NVNT g 2437 Ant1 -44.76 -30 Pass NVNT g 2462 Ant1 -44.5 -30 Pass NVNT n20 2412 Ant1 -44.52 -30 Pass NVNT n20 2437 Ant1 -42.97 -30 Pass NVNT n20 2462 Ant1 -44.12 -30 Pass NVNT n40 2422 Ant1 -40.7 -30 Pass NVNT n40 2437 Ant1 -41.22 -30 Pass NVNT n40 2452 Ant1 -41.52 -30 Pass 40 / 51 Tx. Spurious NVNT b 2412MHz Ant1 Ref Tx. Spurious NVNT b 2412MHz Ant1 Emission 41 / …

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RF EXPOSURE EVALUATION According to FCC 1.1310: 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 ß1.1307(b) FCC ID: 2BTBM-TC002 EUT Specification EUT U-Clock II Frequency band (Operating) BLE: 2.402GHz ~ 2.480GHz WIFI: 2.412GHz ~ 2.462GHz Device category Portable (<20cm separation) Mobile (>20cm separation) Exposure classification Occupational/Controlled exposure (S = 5mW/cm 2 ) General Population/Uncontrolled exposure (S=1mW/cm 2 ) Antenna diversity Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Max. output power BLE BLE: 1.13 dBm 2.4G WIFI IEEE 802.11b: 15.94 dBm IEEE 802.11g: 16.58 dBm IEEE 802.11n-HT20: 15.52 dBm IEEE 802.11n-HT40: 12.95 dBm Antenna gain (Max) 3.18 dBi Evaluation applied MPE Evaluation SAR Evaluation Limits for Maximum Permissible Exposure(MPE) Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density(mW/cm 2 ) Average Time (A) Limits for Occupational/Control Exposures 300-1500 -- -- F/300 6 1500-100000 -- -- 5 6 (B) Limits for General Population/Uncontrol Exposures 300-1500 -- -- F/1500 6 2 / 3 1500-100000 -- -- 1 30 Friis transmission formula: Pd=(Pout*G)\(4*pi*R2) Where P d = Power density in mW/cm 2 , P out =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=20cm P d the limit of MPE, 1mW/cm 2 . If we know the maximum gain of the antenna and total power input to the antenna, through the calculation, we will know the distance where the MPE limit is reached. For multiple RF sources: Multiple RF sources are exempt if: 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 Evaluated k : the maximum reported SAR or MPE of fixed, mobile, or portable RF source k either in the device or at the transmitter site from an existing evaluation at the location of exposure. Exposure Limit k : either the general population/uncontrolled maximum permissible exposure (MPE) or specific Absorption rate (SAR) limit for each fixed, mobile, or portable RF source k. 3 / 3 Measurement Result Operation Mode Channel Frequency (MHz) Max Measured Power (dBm) Tune up tolerance (dBm) Max tune up conducted power (dBm) Output Peak power (mW) Ant. Gain (dBi) Ant. Gain (numeric) Power density at 20cm (mW/ cm2) Power density Limits (mW/ cm2) Results BLE 1Mbps 2480 1.13 1±1 2 1.585 3.18 2.080 0.000656 1 PASS 2.4GHz WIFI (802.11b) 2462 16.58 17±1 18 63.096 3.18 2.080 0.026105 1 PASS Maximum Simultaneous transmission MPE Ratio for Bluetooth & 2.4G WIFI Maximum MPE ratio (Bluetooth) Maximum MPE ratio (2.4G WIFI) ∑ MPE ratios Limit Results 0.000656 0.026105 0.026761 1.000 Pass No need to test SAR. Signature: Alan He Date: 2026-06-12

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* theapplicantmustdesignateacontactlocatedintheUnitedStatesforpurposesofactingasthe applicant’sagentforserviceofprocess,regardlessofwhethertheapplicantisadomesticorforeign entity.AnapplicantlocatedintheUnitedStatesmaydesignateitselfastheagentforserviceofprocess. SC6077001 U.S.AgentDesignationforServiceofProcess- CertificationAttestationLetter 7/10/2026 TO:FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 ATTN.:ReviewingEngineer FCCID:2BTBM-TC002 FRNofapplicant:0037673738 Persection2.911(d)(7)oftheFCCrules,ShenzhenVIJIMTechnologyCo.,Ltd. FRN:0037673738(“theapplicant”)certifiesthattheequipmentforwhichauthorizationissought isdesignatedtothefollowingU.S.agent*forserviceofprocess: CompanyName:GlobalProductServicesandConsultationLLC FCCRegistrationNumber(FRN):0033406703 PhysicalU.S.CompanyAddress:328WPalmAve.Monrovia,CA91016 ContactPerson:MichaelChan Tel:+16263664358 AgentEmailAddress:[email protected] Theabovecontactpersonacceptstheobligationforserviceofprocess. Theapplicantacceptstomaintainanagentfornolessthanoneyearafterthegranteehas terminatedallmarketingandimportationortheconclusionofanyCommission-related proceedinginvolvingtheequipment. ApplicantSigned:AgentSigned(ifdifferentfromApplicant): Signed: Printedname:JianguoChen Title:Manager CompanyName:ShenzhenVIJIMTechnology Co.,Ltd. Date:7/10/2026 Signed: Printedname:MichaelChan Title:TechnicalDirector CompanyName:GlobalProductServicesand ConsultationLLC Date:7/14/2026