Esperanza EH231K Bluetooth In-Ear Headphone TWS Black

Battery capacity: 300 mAh | USB cable length: 0.2 m | Bluetooth version: 5.0 | Battery type: Built-in battery | Control type: Touch | Frame material: Plastic | Talk time: 4 h | User guide: Yes | Headphone frequency: 20 - 2000 Hz | Wearing style: In-ear | Ear coupling: Intraaural | Product type: Wireless headphones | Battery capacity: 40 mAh | Recommended usage: Travel/recreation | Cables included: Charging cable | USB connectivity: Yes | Product colour: Black | Bluetooth profiles: A2DP, AVRCP, HFP, HSP | Number of batteries supported: 1 | Bluetooth: Yes | Continuous audio playback time: 3 h | Battery technology: Lithium polymer (LiPo 4S) | Battery operated: Yes | Weight: 90 g | Battery voltage: 5 V | Maximum operating distance: 10 m | Transmitter frequency: 2.4 GHz | Connectivity technology: Wireless | Volume control: Yes | Volume control: Buttons