Havit E553BT Open Ear Air Conduction Headphones, black

Recommended usage: Music / calls | Microphone type: Built-in | Talk time: 9,5 h | Height: 57.3 mm | Battery capacity: 110 mAh | Wearing style: Head-band | Length: 140 mm | Control type: Buttons | Headphone frequency: 20 - 20000 Hz | Package contents: Headphones | USB Type-C ports quantity: 1 | Product type: Headset | Product colour: Black | Connectivity technology: Wireless | Width: 105 mm | Volume control: Button | Product colour: Grey | Ear coupling: Air conduction | Bluetooth range: 10 m | Warnings: Regularly check the condition of the batteries to prevent leaks. | Battery recharge time: 2 h | Warnings: Do not use near sources of heat or flame. | Headset type: Binaural | USB charging: Yes | Bluetooth: Yes | Input voltage (earpieces): 5 V | Warnings: Keep away from children. | Driver diameter: 15 mm | Bluetooth version: 5.3 | Weight: 23.1 g | Continuous audio playback time: 16,5 h