FCC ID 2BAXW-TFB139C
Portable Bluetooth Retro Radio with Built-in Rechargeable Battery
by RUIJIN TREFAN TECHNOLOGY CO.,LTD
Grantee Code: 2BAXW Product Code: TFB139C
Latest application date: 2026-03-31
FCC ID Device Details
| FCC ID | 2BAXW-TFB139C |
|---|---|
| Mirrors | fcc.id | gov | fccid.ai |
| Grantee Code | 2BAXW |
| Product Code | TFB139C |
| Applicant Business | RUIJIN TREFAN TECHNOLOGY CO.,LTD 🇨🇳 |
| Related Domains |  hengdian-group.com  fccusagent.com |
| Equipment Class | Portable Bluetooth Retro Radio with Built-in Rechargeable Battery |
| Test Firm | Guangzhou LCS Compliance Testing Laboratory Ltd |
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 2402-2480 MHz | Original Equipment | 2026-03-31 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| User manual | Users Manual | 2026-03-31 | PDF 717.2 KB |
| Internal photos | Internal Photos | 2026-03-31 | PDF 1.5 MB |
| External photos | External Photos | 2026-03-31 | PDF 4.7 MB |
| Label and label location | ID Label/Location Info | 2026-03-31 | PDF 452.3 KB |
| Test setup photos | Test Setup Photos | 2026-03-31 | PDF 605.8 KB |
| Antenna information | Test Report | 2026-03-31 | PDF 315 KB |
| Appendix A test data BT part 1 | Test Report | 2026-03-31 | PDF 4 MB |
| Appendix A test data BT part 2 | Test Report | 2026-03-31 | PDF 4.2 MB |
| Test Report BT | Test Report | 2026-03-31 | PDF 1 MB |
| Agent attestation letter | Attestation Statements | 2026-03-31 | PDF 137.8 KB |
| Covered equipment letter | Attestation Statements | 2026-03-31 | PDF 260.3 KB |
| Due digilence letter | Attestation Statements | 2026-03-31 | PDF 251.2 KB |
| Confidentiality request letter | Cover Letter(s) | 2026-03-31 | PDF 260.6 KB |
| Letter of declaration model difference | Cover Letter(s) | 2026-03-31 | PDF 116.8 KB |
| RF exposure evaluation | RF Exposure Info | 2026-03-31 | PDF 195.2 KB |
| Block diagram Metadata only | Block Diagram | PDF 82.4 KB | |
| Schematic Metadata only | Schematics | PDF 392.8 KB | |
| Operation description Metadata only | Operational Description | PDF 111.6 KB |
Application Information
| Application ID | H3JvDEyol1HCu49yA7hmmQ== |
|---|---|
| Final Action Date | 2026-03-31 |
| Application Purpose | Original Equipment |
| Applicant FRN | 0033682428 |
| Model | TFB139C |
| Frequency Range | 2402-2480 MHz |
| Equipment Class | DSS - Part 15 Spread Spectrum Transmitter |
| Device Description | Portable Bluetooth Retro Radio with Built-in Rechargeable Battery |
| Responsible Party | Jeff Chai, jeff.chai@hengdian-group.com , 0086-571-87636957 |
| Non-Technical Contact | Tim Rayne, FCC US Agent, LLC, Support@FCCUSAgent.com , (708)571-3148 |
| Test Firm | Gavin Liang, Guangzhou LCS Compliance Testing Laboratory Ltd, gavin.liang@lcs-cert.com  , 86-20-39166689 |
| TCB Email | o.kneip@kl-certification.de  |
| TCB Scope | A4: UNII devices & low power transmitters using spread spectrum techniques |
| Short-Term Confidentiality | No |
| Long-Term Confidentiality | Yes |
| Modular Equipment | Does not apply |
| Composite Device | No |
| 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 |
|---|---|---|
| H3JvDEyol1HCu49yA7hmmQ== | 2026-03-31 | Original Equipment |
Equipment Authorization
| Frequency | Output | Rules |
|---|---|---|
| 2402-2480 MHz | 0.0034 | 15C |
Grants
TCB Grant - Application H3JvDEyol1HCu49yA7hmmQ==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
KL-Certification GmbH Heinrich-Hertz-Allee 7 St. Ingbert, 66386 Germany |
Date of Grant: 03/31/2026 Application Dated: 03/31/2026 |
| RUIJIN TREFAN TECHNOLOGY CO.,LTD |
| North Jinyuan Road, Economic and Development Zone |
| Ruijin, Jiangxi, China |
| Attention: Jeff Chai , Sales Manger |
| 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: | 2BAXW-TFB139C |
| Name of Grantee: | RUIJIN TREFAN TECHNOLOGY CO.,LTD |
| Equipment Class: | Part 15 Spread Spectrum Transmitter |
| Notes: | Portable Bluetooth Retro Radio with Built-in Rechargeable Battery |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 2402.0 - 2480.0 | 0.0034 |
| Power listed is maximum peak conducted output power. This filing meets the SAR threshold exclusion set forth in KDB 447498 and therefore can be used in mobile/portable configurations. The antenna used for this transmitter must not transmit simultaneously with any other antenna or transmitter, except in accordance with FCC multi-transmitter product procedures. Users and installers must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance. |