Esperanza EH238K Bluetooth In-Ear Headphone TWS Black

Included cable : USB C / USB C PD | Headphone frequency: 20 - 2000 Hz | Number of batteries supported: 1 | Weight: 90 g | Control type: Touch | Battery operated: Yes | Battery technology: Lithium polymer (LiPo 4S) | Bluetooth version: 5.3 | Battery type: Built-in battery | Frame material: Plastic | Battery voltage: 5 V | USB cable length: 0.2 m | Maximum operating distance: 10 m | Transmitter frequency: 2.4 GHz | Continuous audio playback time: 3 h | Recommended usage: Travel/recreation | Bluetooth: Yes | Talk time: 4 h | Connectivity technology: Wireless | Volume control: Buttons | Volume control: Yes | Ear coupling: Intraaural | Product colour: Black | User guide: Yes | Product type: Wireless headphones | Cables included: Charging cable | Battery capacity: 30 mAh | Battery capacity: 230 mAh | Bluetooth profiles: A2DP, AVRCP, HFP, HSP | Wearing style: In-ear | USB connectivity: Yes