Esperanza EH163K Headphones with microphone Headband Black

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