Esperanza TWS CARDERA Headphones Wireless In-ear Calls/Music Bluetooth Black

Charging source: Battery | Battery technology (charging case): Lithium Polymer (LiPo) | Backlight colour: Red | Bluetooth profiles: HFP | Bluetooth profiles: HSP | Backlight: Yes | Bluetooth profiles: AVRCP | Bluetooth profiles: A2DP | Battery technology: Lithium Polymer (LiPo) | Battery type: Built-in battery | Headphone frequency: 20 - 20000 Hz | Battery capacity (charging case): 300 mAh | Battery capacity: 30 mAh | Talk time: 4 h | Input voltage (earpieces): 5 V | Bluetooth version: 5.0 | Product colour: Black | Product type: Headphones | Control type: Buttons | Recommended usage: Calls/Music | Fast charging time: 60 min | Bluetooth: Yes | Microphone in: Yes | Base station colour: Black | Base station USB connector: USB Type-C | Wearing style: In-ear | Ear coupling: Intraaural | Wireless range: 10 m | Intraaural headphones type: Earbuds | Connectivity technology: Wireless