Esperanza EH228K headphones/headset Wireless In-ear Calls/Music Micro-USB Bluetooth Black

Product colour: Black Control type: Buttons Recommended usage: Calls/Music Product type: Headphones Wearing style: In-ear Bluetooth profiles: A2DP Bluetooth: Yes Connectivity technology: Wireless Frequency band: 2.402-2.480 GHz USB connector: Micro-USB Bluetooth version: 5.0 Battery technology: Lithium Polymer (LiPo) Battery capacity: 40 mAh Battery voltage: 5 V Battery recharge time: 1 h Talk time: 4 h Battery type: Built-in battery Battery capacity (charging case): 300 mAh Microphone type: Built-in Ear coupling: Intraaural Intraaural headphones type: Earbuds Headphone frequency: 20 - 20000 Hz Base station colour: Black