Esperanza EH239K Bluetooth In-Ear Headphone TWS Black

Battery type: Built-in battery | Bluetooth: Yes | Warnings: Regularly check the condition of the batteries to prevent leaks. | Connectivity technology: Wireless | Warnings: Keep away from children. | Warnings: Do not use near sources of heat or flame. | User guide: Yes | Recommended usage: Travel/recreation | Bluetooth version: 5.3 | Weight: 90 g | Battery capacity: 230 mAh | Maximum operating distance: 10 m | Battery capacity: 30 mAh | Cables included: Charging cable | Battery voltage: 5 V | Battery technology: Lithium polymer (LiPo 4S) | Bluetooth profiles: A2DP, AVRCP, HFP, HSP | USB connectivity: Yes | Product type: Wireless headphones | Number of batteries supported: 1 | Product colour: Black | Wearing style: In-ear | Volume control: Yes | Frame material: Plastic | Transmitter frequency: 2.4 GHz | Ear coupling: Intraaural | Control type: Touch | Talk time: 4 h | Headphone frequency: 20 - 2000 Hz | USB cable length: 0.2 m | Volume control: Buttons | Battery operated: Yes | Continuous audio playback time: 3 h | Included cable : USB C / USB C PD