Cool Headphones Headsets WK P11 Unilateral Bluetooth V4.2 Earphone (Black) earphone

Headphones Headsets WK P11 Unilateral Bluetooth V4.2 Earphone (Black)
WK P11 Unilateral Bluetooth V4.2 Earphone (Black)1. Bluetooth version: V4.2 2. Battery capacity: 110mAh 3. Talk time: 5.5 hours 4. Music time: 5 hours 5. Standby time: 137 hours