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

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