Havit TW982 - TWS wireless headphones, blue

Case weight: 35,8 g Left earpiece weight: 3.9 g Charging case dimensions (W x D x H): 58 x 49,6 x 26,5 mm Right earpiece weight: 3.9 g Headset type: Binaural Wearing style: In-ear Recommended usage: Calls/Music Product type: Headset Product colour: Blue Oven control type: Touch Package contents: Headphones Bluetooth range: 10 m USB Power Delivery (USB PD): Yes Bluetooth: Yes Connectivity technology: Wireless Bluetooth version: 5.4 Battery capacity (charging case): 400 mAh Continuous audio playback time: 7,5 h Left earpiece battery capacity: 40 mAh Battery operated: Yes Right earpiece battery capacity: 40 mAh Talk time: 4 h Battery recharge time: 1,5 h Continuous audio playback time (with charging case): 33 h Number of microphones: 1 Built-in microphone: Yes Warnings: Do not use near sources of heat or flame. Driver diameter: 13 mm Impedance: 32 Ω Headphone sensitivity: 117 dB Ear coupling: On-ear Headphone frequency: 20 - 20000 Hz