Esperanza EH238K Bluetooth In-Ear Headphone TWS Black

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