FCC ID 2BBGF-W542
COROS APEX 4 42mm
by Guangdong COROS Sports Technology Co., Ltd
Grantee Code: 2BBGF Product Code: W542
Latest application date: 2025-11-28
FCC ID Device Details
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 2412-2462 MHz | Original Equipment | 2025-11-28 |
| 2402-2480 MHz | Original Equipment | 2025-11-28 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| user manual | Users Manual | 2026-05-27 | PDF 1.5 MB |
| internal photo | Internal Photos | 2026-05-27 | PDF 955.5 KB |
| external photo | External Photos | 2025-11-28 | PDF 717.3 KB |
| label&label location | ID Label/Location Info | 2025-11-28 | PDF 5.7 MB |
| setup photo | Test Setup Photos | 2025-11-28 | PDF 251.4 KB |
| setup photo SAR | Test Setup Photos | 2025-11-28 | PDF 84.2 KB |
| ANTENNA REPORT | Test Report | 2025-11-28 | PDF 406.6 KB |
| antenna report | Test Report | 2025-11-28 | PDF 406.6 KB |
| test report | Test Report | 2025-11-28 | PDF 4.1 MB |
| test report | Test Report | 2025-11-28 | PDF 2.7 MB |
| US Agent | Attestation Statements | 2025-11-28 | PDF 325.6 KB |
| cover list | Attestation Statements | 2025-11-28 | PDF 79.3 KB |
| Long & Short term Confidentiality Letter | Cover Letter(s) | 2025-11-28 | PDF 144.8 KB |
| POA | Cover Letter(s) | 2025-11-28 | PDF 32.2 KB |
| SAR report | RF Exposure Info | 2025-11-28 | PDF 4.4 MB |
| block diagram Metadata only | Block Diagram | PDF 641.9 KB | |
| Schematics Metadata only | Schematics | PDF 1.3 MB | |
| schematics Metadata only | Schematics | PDF 1.3 MB | |
| operational description Metadata only | Operational Description | PDF 47.4 KB |
Application Information
| Application ID | b98jVGpeleeaa8vQ58gz/Q== |
|---|---|
| Final Action Date | 2025-11-28 |
| Application Purpose | Original Equipment |
| Applicant FRN | 0033838632 |
| Model | W542 |
| Frequency Range | 2412-2462 MHz |
| Equipment Class | DTS - Digital Transmission System |
| Device Description | COROS APEX 4 42mm |
| Responsible Party | Qiang Wu, wuqiang@coros.com  , 0769-88775505 |
| Test Firm | Rita Xiao, Shenzhen CTB Testing Technology Co., Ltd., simon@ctb-lab.com  , 86-13538218145 |
| TCB Email | tcb@metlabs.com  |
| TCB Scope | A4: UNII devices & low power transmitters using spread spectrum techniques |
| Short-Term Confidentiality | Yes |
| Long-Term Confidentiality | Yes |
| Modular Equipment | Does not apply |
| Composite Device | Yes |
| Cognitive Radio | No |
| Authorization Waiver | No |
| Authorization Waiver Approved | No |
| Section 5301 Certification | Yes |
| Related OET Knowledge DataBase Inquiry | No |
Applications
| Application ID | Date | Purpose |
|---|---|---|
| b98jVGpeleeaa8vQ58gz/Q== | 2025-11-28 | Original Equipment |
| YC0wu2aKZmze7fr8SgO+rg== | 2025-11-28 | Original Equipment |
Equipment Authorization
Grants
TCB Grant - Application YC0wu2aKZmze7fr8SgO+rg==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230-3432 |
Date of Grant: 11/28/2025 Application Dated: 11/28/2025 |
| Guangdong COROS Sports Technology Co., Ltd |
| Room 601, Room 701, Building 2, No. 2, Science and |
| Technology 9 Rd, Songshan Lake Hi Tech Zone |
| Dongguan city, Guangdong Province, P.R., China |
| Attention: Qiang Wu , |
| NOT TRANSFERABLE |
| EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below. |
| FCC IDENTIFIER: | 2BBGF-W542 |
| Name of Grantee: | Guangdong COROS Sports Technology Co., Ltd |
| Equipment Class: | Part 15 Spread Spectrum Transmitter |
| Notes: | COROS APEX 4 42mm |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| CC | 15C | 2402.0 - 2480.0 | 0.01226 |
| Output power listed is conducted. |
| CC: | This device is certified pursuant to two different Part 15 rules sections. |
TCB Grant - Application b98jVGpeleeaa8vQ58gz/Q==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230-3432 |
Date of Grant: 11/28/2025 Application Dated: 11/28/2025 |
| Guangdong COROS Sports Technology Co., Ltd |
| Room 601, Room 701, Building 2, No. 2, Science and |
| Technology 9 Rd, Songshan Lake Hi Tech Zone |
| Dongguan city, Guangdong Province, P.R., China |
| Attention: Qiang Wu , |
| NOT TRANSFERABLE |
| EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below. |
| FCC IDENTIFIER: | 2BBGF-W542 |
| Name of Grantee: | Guangdong COROS Sports Technology Co., Ltd |
| Equipment Class: | Digital Transmission System |
| Notes: | COROS APEX 4 42mm |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| CC | 15C | 2402.0 - 2480.0 | 0.00433 | ||
| CC | 15C | 2412.0 - 2462.0 | 0.22264 |
| Output power listed is conducted. Highest reported SAR extremity (wrist-worn 10g SAR) and head (front of face 10mm) are 0.48W/kg, 0.87W/kg respectively. |
| CC: | This device is certified pursuant to two different Part 15 rules sections. |