UGREEN ClipBuds Magic WS208C RF Exposure Test Report
Report Number: BL-SZ2540652-701
Date of Issue: May 14, 2025
General Information
Test Laboratory
Name: Shenzhen BALUN Technology Co., Ltd.
Address: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China
Phone Number: +86 755 6685 0100
Test Location
Name: Shenzhen BALUN Technology Co., Ltd.
Location: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China
Alternative Location: 1/F, Building B, Ganghongji High-tech Intelligent Industrial Park, No. 1008, Songbai Road, Yangguang Community, Xili Sub-district, Nanshan District, Shenzhen, Guangdong Province, P. R. China
Accreditation Certificate: The laboratory is a testing organization accredited by FCC as a accredited testing laboratory. The designation number is CN1196.
Product Information
Applicant Information
| Applicant | Ugreen Group Limited |
| Address | UGREEN Building, Longcheng Industrial Park, Longguanxi Road, Longhua, ShenZhen, China |
Manufacturer Information
| Manufacturer | Ugreen Group Limited |
| Address | UGREEN Building, Longcheng Industrial Park, Longguanxi Road, Longhua, ShenZhen, China |
Factory Information
| Factory | Shenzhen Swetz Sound Technology Co., Ltd |
| Address | No.19, Jianlong Street, Baoan Community, Yuanshan, Longgang District, Shenzhen City, Guangdong, P.R. China |
General Description for Equipment under Test (EUT)
| EUT Name | UGREEN ClipBuds Magic |
| Model Name Under Test | WS208C |
| Series Model Name | N/A |
| Description of Model name differentiation | N/A |
| Hardware Version | INC-TE252B |
| Software Version | V0.2.3 |
| Dimensions (Approx.) | N/A |
| Weight (Approx.) | N/A |
Remark: Product Number (P/N) codes for marketing purpose include: 55136, 55136A, 55136B, 55136C, 55136U, 55136P, 55136X, 55136JP, 55136EU, 55136UK, 55136US.
Technical Information
| Network and Wireless connectivity | Bluetooth (BLE) |
| Operating Mode | Bluetooth |
| Frequency Range | 2402 ~ 2480 MHz |
| Antenna Type | Ceramic Antenna |
| Exposure Category | General Population/Uncontrolled Exposure |
| Product Type | Portable Device |
Summary of Test Result
Test Standards
| No. | Identity | Document Title |
|---|---|---|
| 1 | 47 CFR Part 2.1093 | Radiofrequency radiation exposure evaluation: portable devices |
| 1 | KDB 447498 D04 v01 | KDB 447498 D04 Interim General RF Exposure Guidance v01 |
Device Category and Levels Limits
Portable Devices: CFR Title 47 §2.1093(b)
For purposes of this section, a portable device 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.
FCC KDB 447498 Devices
According with FCC KDB 447498 D04, Appendix B, The SAR-based exemption formula applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power or effective radiated power (ERP), whichever is greater, of less than or equal to the threshold Pth (mW). This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). The following table shows the power threshold from 5mm to 50mm.
Power Thresholds (mW)
| Frequency (MHz) | At separation distance of | At separation distance of | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| ≤5 mm | 10 mm | 15 mm | 20 mm | 25 mm | 30 mm | 35 mm | 40 mm | 45 mm | 50 mm | |
| 300 | 39 mW | 65 mW | 88 mW | 110 mW | 129 mW | 148 mW | 166 mW | 184 mW | 201 mW | 217 mW |
| 450 | 22 mW | 44 mW | 67 mW | 89 mW | 112 mW | 135 mW | 158 mW | 180 mW | 203 mW | 226 mW |
| 835 | 9 mW | 25 mW | 44 mW | 66 mW | 90 mW | 116 mW | 145 mW | 175 mW | 207 mW | 240 mW |
| 1900 | 3 mW | 12 mW | 26 mW | 44 mW | 66 mW | 92 mW | 122 mW | 157 mW | 195 mW | 236 mW |
| 2450 | 3 mW | 10 mW | 22 mW | 38 mW | 59 mW | 83 mW | 111 mW | 143 mW | 179 mW | 219 mW |
| 3600 | 2 mW | 8 mW | 18 mW | 32 mW | 49 mW | 71 mW | 96 mW | 125 mW | 158 mW | 195 mW |
| 5800 | 1 mW | 6 mW | 14 mW | 25 mW | 40 mW | 58 mW | 80 mW | 106 mW | 136 mW | 169 mW |
Assessment Result
Output Power
| Mode | Bluetooth |
| Conducted Power (dBm) | 2.37 |
| Antenna Gain (dBi) | -0.10 |
| EIRP (dBm) | 2.27 |
Note: This report listed the worst case power value, please refer to BL-SZ2540652-601 report for more details.
Tune-up Power
| Mode | Bluetooth |
| Conducted Power Range (dBm) | [1.00, 3.00] |
| EIRP Range (dBm) | [0.90, 2.90] |
| ERP Range (dBm) | [-1.25, 0.75] |
Note1: ERP= EIRP -2.15dB
Note2: According KDB 447498 D04, used the greater of maximum conducted power and ERP to compare with the threshold value Pth.
RF Exposure Evaluation Result
| Mode | Distance (mm) | Frequency (MHz) | Tune-up limit power (dBm) | Tune-up limit power (mW) | Threshold Value(mW) | Verdict |
|---|---|---|---|---|---|---|
| Bluetooth | 5.00 | 2480 | 3.00 | 2.00 | 2.72 | Compliance |
Conclusion
This EUT is deemed to comply with the reference level limits, therefore the basic restrictions are compliant with human exposure limits.
Statement
- The laboratory guarantees the scientificity, accuracy and impartiality of the test, and is responsible for all the information in the report, except the information provided by the customer. The customer is responsible for the impact of the information provided on the validity of the results.
- The report without China inspection body and laboratory Mandatory Approval (CMA) mark has no effect of proving to the society.
- For the report with CNAS mark or A2LA mark, the items marked with "♡" are not within the accredited scope.
- This report is invalid if it is altered, without the signature of the testing and approval personnel, or without the "inspection and testing dedicated stamp” or test report stamp.
- The test data and results are only valid for the tested samples provided by the customer.
- This report shall not be partially reproduced without the written permission of the laboratory.
- Any objection shall be raised to the laboratory within 30 days after receiving the report.
