Havit E553BT Freego Pro Open Ear Air Conduction Headphones, green

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