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

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