Esperanza EH220 Bluetooth headphones Headband, Black

Power requirements: 5V DC | Headset type: Binaural | Continuous audio playback time: 5 h | Battery technology: Lithium Polymer (LiPo) | Product colour: Black | Bluetooth: Yes | Bluetooth profiles: AVRCP | Bluetooth profiles: HFP | Bluetooth profiles: HSP | Bluetooth version: 5.0 | Driver unit: 4 cm | Headphone sensitivity: 105 dB | Battery capacity: 200 mAh | Battery recharge time: 2 h | Microphone sensitivity: -42 dB | Impedance: 32 Ω | Wearing style: Head-band | Bluetooth profiles: A2DP | Wireless range: 10 m | Frequency response: 30-16000 Hz | Headphone frequency: 20 - 20000 Hz | Talk time: 7 h | Connectivity technology: Wireless