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

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