Esperanza EH239K Bluetooth In-Ear Headphone TWS Black

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