Havit E531BT bone conduction headphones, black

Warnings: Keep away from children. | Warnings: Regularly check the condition of the batteries to prevent leaks. | Driver diameter: 16 mm | Warnings: Do not use near sources of heat or flame. | Length: 132 mm | Talk time: 6 h | Bluetooth version: 5.3 | Headphone sensitivity: 86 dB | Weight: 24 g | Bluetooth: Yes | Continuous audio playback time: 7 h | Input voltage (earpieces): 5 V | Package contents: Headphones | Control type: Buttons | Headset type: Binaural | Width: 106 mm | Bluetooth profiles: A2DP V1.3, AVRCP V1.6, HFP V1.7 | Headphone frequency: 180 - 16000 Hz | Product type: Headset | Height: 43 mm | Standby time: 240 h | Battery capacity: 140 mAh | Connectivity technology: Wireless | International Protection (IP) code: IPX5 | Wearing style: Head-band | Volume control: Button | Bluetooth range: 10 m | Recommended usage: Music / calls | Ear coupling: Bone conduction | Product colour: Black | Microphone type: Built-in | Battery recharge time: 2 - 3 h