Esperanza Libero EH163K Headset Wireless Head-band Music Mini-USB Bluetooth Black

3.5 mm connector: No | Headset type: Binaural | Battery technology: Lithium Polymer (LiPo) | Continuous audio playback time: 4 h | Weight: 168 g | On/off switch: Yes | USB connector: Mini-USB | USB connectivity: Yes | Driver unit: 4 cm | Bluetooth version: 3.0+HS | Height: 140 mm | Foldable: Yes | 2.5 mm connector: No | Product colour: Black | Depth: 80 mm | Wearing style: Head-band | Rechargeable battery: Yes | Microphone type: Not available | Battery capacity: 300 mAh | Battery operated: Yes | Audio output channels: 2.0 channels | Product type: Headset | Width: 180 mm | Bluetooth: Yes | Impedance: 32 Ω | Charging source: USB | Wireless range: 10 m | Recommended usage: Music | Headphone frequency: 20 - 20000 Hz | Bluetooth profiles: A2DP | Operating keys: Multi-key | Connectivity technology: Wireless | Talk time: 10 h | Bluetooth profiles: HSP | Bluetooth profiles: HFP | Bluetooth profiles: AVRCP | Ear coupling: Circumaural | Charging voltage: 5 V