Esperanza EH225K Bluetooth In-Ear Headphone TWS Black

Bluetooth version: 5.0 | Battery type: Built-in battery | Battery voltage: 5 V | Bluetooth: Yes | Recommended usage: Travel/recreation | Product colour: Black | Volume control: Buttons | Connectivity technology: Wireless | USB cable length: 0.2 m | Battery technology: Lithium polymer (LiPo 4S) | USB connectivity: Yes | Wearing style: In-ear | Bluetooth profiles: A2DP, AVRCP, HFP, HSP | Headphone frequency: 20 - 2000 Hz | Battery operated: Yes | Control type: Touch | Number of batteries supported: 1 | Ear coupling: Intraaural | Talk time: 4 h | User guide: Yes | Continuous audio playback time: 3 h | Frame material: Plastic | Volume control: Yes | Weight: 90 g | Cables included: Charging cable | Battery capacity: 300 mAh | Battery capacity: 30 mAh | Product type: Wireless headphones | Maximum operating distance: 10 m | Transmitter frequency: 2.4 GHz