| Other Features | WIRELESS |
| Sales Package | HEADSET |
| Set of | 1 |
| Pack of | 1 |
| Bluetooth | Yes |
| Bluetooth Range | 10 |
| Bluetooth Frequency Response | 2.4000 - 2.4835 |
| Microphone Type | Built-in-Microphone |
| Microphone Frequency Response | 100 - 4000 Hz |
| USB Support | Yes |
| Cord Type | 0.4 m |
| Other Features | WIRELESS |
| Weight | 34 (without Cord) |
| Brand Color | RED |
| Brand | Sony |
| Model ID | MDR-EX31BN |
| Model Number | MDR -EX31BN BLUETOOTH EARPHONE |
| Material | Hybrid silicone rubber earbuds (S,M,L) supplied fitting and long-term wearing comfort |
| Waterproof | No |
| Color | Black |
| Cushion Type | In The Ear |
| Earbud Type | Double Flange |
| Compatible With | MOBILE |
| Size | 40 CM |
| Compatible Devices | Mobile |
| Headset Design | Canalphone |
| Wired/Wireless | Wireless |
| Type of Headset | In the Ear Closed Back |
| In Sales Package | USB Cable, Hybrid Silicone Earbuds (S/M/L 3 x 2), Operating Instruction |
| Headset Impedance | 16 ohm |
| Headset Sensitivity | 105 dB/mW (Power On) |
| Headset Driver Units | 13.5 mm |
| Headset Frequency Response | 20 - 20000 Hz |
| Charge Time | 2.5 |
| Play Time | 10 |
| Battery | Built-in Lithium-Ion Rechargeable Battery |
| Noise Cancellation Headphones | Yes |
| Wireless Type | Bluetooth |