Havit E553BT Open Ear Air Conduction Headphones, black

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