Esperanza EH163K Headphones with microphone Headband Black

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