Esperanza EH163K Headphones with microphone Headband Black

Product type: headphones with microphone | Connectivity technology: Wireless | Talk time: 10 h | Bluetooth profiles: A2DP | Wireless range: 10 m | Headphone frequency: 30 - 16000 Hz | Headphone frequency: 20 - 20000 Hz | Wearing style: Head-band | Warnings: Do not disassemble or modify the product yourself. | Warnings: The product contains batteries which must be disposed of correctly. | Warnings: Read the user manual before use. | Bluetooth profiles: AVRCP | Bluetooth profiles: HSP | Power requirements: 5V DC | Bluetooth: Yes | Microphone sensitivity: -42 dB | Product colour: Black | Bluetooth version: 3.0 | Headphone sensitivity: 105 dB | Driver unit: 4 cm | Bluetooth profiles: HFP | Impedance: 32 Ω | Continuous audio playback time: 4 h | Maximum input power: 100 mW | Battery capacity: 300 mAh | Headset type: Binaural | Battery technology: Lithium Polymer (LiPo) | Battery recharge time: 3 h