FCC ID DGF-90670
3M WorkTunes In-Ear Electronic Hearing Protector
by 3M Company
Grantee Code: DGF Product Code: 90670
Latest application date: 2026-01-29
FCC ID Device Details
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 2402-2480 MHz | Original Equipment | 2026-01-29 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| Manual | Users Manual | 2026-07-28 | PDF 352.5 KB |
| Internal Photos | Internal Photos | 2026-07-28 | PDF 2 MB |
| External Photos | External Photos | 2026-07-28 | PDF 2.5 MB |
| Label Information | ID Label/Location Info | 2026-01-29 | PDF 484.1 KB |
| Test Setup Photos | Test Setup Photos | 2026-07-28 | PDF 4.5 MB |
| Antenna Information | Test Report | 2026-01-29 | PDF 1.8 MB |
| Test Report | Test Report | 2026-01-29 | PDF 3.8 MB |
| 2.911(d)(5)(i)-(ii) Covered Equipment | Attestation Statements | 2026-01-29 | PDF 138.8 KB |
| 2.911(d)(7) Agent of Service | Attestation Statements | 2026-01-29 | PDF 152.1 KB |
| Confidentiality Request Long Term | Cover Letter(s) | 2026-01-29 | PDF 125 KB |
| Confidentiality Request Short Term | Cover Letter(s) | 2026-01-29 | PDF 98.7 KB |
| RF Exposure | RF Exposure Info | 2026-01-29 | PDF 136.5 KB |
| Block Diagram Metadata only | Block Diagram | PDF 72.9 KB | |
| Schematics Metadata only | Schematics | PDF 265.4 KB | |
| Operational Description Metadata only | Operational Description | PDF 1.7 MB |
Application Information
| Application ID | HaU9coRcrA8AavgwmzdwLQ== |
|---|---|
| Final Action Date | 2026-01-29 |
| Application Purpose | Original Equipment |
| Applicant FRN | 0005881040 |
| Model | 90670 |
| Frequency Range | 2402-2480 MHz |
| Equipment Class | DSS - Part 15 Spread Spectrum Transmitter |
| Device Description | 3M WorkTunes In-Ear Electronic Hearing Protector |
| Responsible Party | Yuriy Litvinov, ylitvinov@mmm.com  , 651-778-6336 |
| Non-Technical Contact | Yuriy Litvinov, 3M Company, ylitvinov@mmm.com , 651-778-6336 |
| Test Firm | Yuriy Litvinov, 3M Company, Hardgoods Regulatory Engineering Lab, ylitvinov@mmm.com , 6517786336 |
| TCB Email | jeff.woods@tuvsud.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 | 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 |
|---|---|---|
| HaU9coRcrA8AavgwmzdwLQ== | 2026-01-29 | Original Equipment |
Equipment Authorization
| Frequency | Output | Rules |
|---|---|---|
| 2402-2480 MHz | 0.0035 | 15C |
Grants
TCB Grant - Application HaU9coRcrA8AavgwmzdwLQ==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
TUV SUD America Inc. 401 Edgewater Place Suite #500 Wakefield, MA 01880 |
Date of Grant: 01/29/2026 Application Dated: 01/29/2026 |
| 3M Company |
| 3M Center |
| Saint Paul, MN 55144 |
| Attention: Yuriy Litvinov , Lead EMC Engineer |
| 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: | DGF-90670 |
| Name of Grantee: | 3M Company |
| Equipment Class: | Part 15 Spread Spectrum Transmitter |
| Notes: | 3M WorkTunes In-Ear Electronic Hearing Protector |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 2402.0 - 2480.0 | 0.0035 |
| Output power is Peak conducted. |