| Company Number: | 409B | 
| Company Name: | SONY CORPORATION | 
| Certification Number: | 409B-RF4000 | 
| Approval Date: | 2010-01-14 | 
| Type of Radio Equipment: | Low Power Device (2400-2483.5 MHz) Receiver Spread Spectrum/Digital Device (2400-2483.5 MHz) | 
| Equipment Type: | Radio Equipment (RE) | 
| Certified By: | Underwriters Laboratories | 
| Spec. | Iss. | From Freq. | To Freq. | Emission Designation | Min. Power | Max. Power | Field Strength | Dis. (m) | 
|---|---|---|---|---|---|---|---|---|
| RSS210 | 7.0 | 2.404 G | 2.476 G | 1M14G1D | 3.8 mW | 3.8 mW | 
| Approval Agent: | Mr. Toyokazu Imamura | 
| Certified On: | 2010-01-14 | 
| Certified By: | Underwriters Laboratories | 
| Wireless Lab: | UL Japan, Inc. 2973B | 
| Wireless Test Site: | 2973B-2 | 
| Spicific Absorbsion Test Lab: | -- | 
| SAR Test Results: | |RF:0.005 W/m2| | 
| Rule Specificaiton | Issue No. | Frequency Range | Emission Designator | Power Range | Field Strength | Distance | 
|---|---|---|---|---|---|---|
| RSS210 | 7 | 2404.0 MHz - 2476.0 MHz | G1D-- | up to 3.8 mW | -- | -- | 
| RSS210 | 7 | 2404.0 MHz - 2476.0 MHz | G1D-- | up to 3.8 mW | -- | -- | 
| RSS210 | 7 | 2404.0 MHz - 2476.0 MHz | 1M14G1D-- | up to 3.8 mW | -- | -- | 
| Application ID | IC ID | Date | Model | 
|---|---|---|---|
| 139331 | 409B-RF4000 | 2010-01-14 | MDR-RF4000 | 
| FCC ID : Device | 
|---|
| AK8RF4000: Wireless Stereo Headphones 2010-01-13 - Sony Corporation |