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

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