Havit TW982 - TWS wireless headphones, black

Left earpiece weight: 3.9 g Case weight: 35,8 g Charging case dimensions (W x D x H): 58 x 49,6 x 26,5 mm Right earpiece weight: 3.9 g Product type: Headset Recommended usage: Calls/Music Headset type: Binaural Product colour: Black Wearing style: In-ear Oven control type: Touch Package contents: Headphones Bluetooth range: 10 m Bluetooth: Yes USB Power Delivery (USB PD): Yes Bluetooth version: 5.4 Connectivity technology: Wireless Continuous audio playback time (with charging case): 33 h Talk time: 4 h Left earpiece battery capacity: 40 mAh Battery recharge time: 1,5 h Battery capacity (charging case): 400 mAh Battery operated: Yes Continuous audio playback time: 7,5 h Right earpiece battery capacity: 40 mAh Built-in microphone: Yes Number of microphones: 1 Warnings: Regularly check the condition of the batteries to prevent leaks. Driver diameter: 13 mm Headphone sensitivity: 117 dB Impedance: 32 Ω Ear coupling: On-ear Headphone frequency: 20 - 20000 Hz