Esperanza EH238K Bluetooth In-Ear Headphone TWS Black

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