Havit TW931 - TWS wireless headphones, black

Left earpiece weight: 3 g | USB Power Delivery (USB PD): Yes | Bluetooth: Yes | Bluetooth version: 5.4 | Wearing style: In-ear | Talk time: 4 h | Recommended usage: Calls/Music | Charging case dimensions (W x D x H): 46,7 x 51 x 23,8 mm | Right earpiece weight: 3 g | Continuous audio playback time: 6 h | Battery operated: Yes | Impedance: 26 Ω | Number of microphones: 2 | USB Type-C ports quantity: 1 | Product colour: Black | Headphone frequency: 20 - 20000 Hz | Product type: Headset | Headset type: Binaural | Oven control type: Touch | Right earpiece battery capacity: 30 mAh | Ear coupling: Intraaural | Left earpiece battery capacity: 30 mAh | Battery recharge time: 1,5 h | Built-in microphone: Yes | Connectivity technology: Wireless | Package contents: Charging case | Package contents: Headphones | Battery capacity (charging case): 300 mAh | Bluetooth range: 10 m | Case weight: 25,2 g | Driver diameter: 10 mm | Warnings: Do not use near sources of heat or flame.