X7 Bluetooth 4.1 Mini Invisible Wireless Sports Bluetooth Earphone with Charging Box (Red) Filter-Metal Cases Size: 50x14mm

Size: 50x14mm

One Package Size 10cm * 13cm * 14cm / 3

and Micro USB port

Carton Size 46cm * 34cm * 47cm / 18

X7 Bluetooth 4.1 Mini Invisible Wireless Sports Bluetooth Earphone with Charging Box (Red) Filter-Metal Cases Size: 50x14mm1. Bluetooth version: 4. 1 2. Ergonomic design, comfortable to wear 3. Mini design, easy to carry 4. One key control, easy to use 5. Can connect two Bluetooth devices at the same time 6. Compatible with 99% of products on the market, supporting WeChat voice, video QQ voice and other mainstream audition software 7. IOS system mobile phone can display power 8. Music time: 16 hours 9. Charging time: 1 2 hours 10. Battery capacity: headset 50mAh, charging