Havit E553BT Freego Pro Open Ear Air Conduction Headphones, green

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