Rain proof & Sweat proof back neck sport Bluetooth in-ear earphone, compatible with all Bluetooth devices

- With built-in MIC; click one key to pick up/hang off/ talk through mobile phones via Bluetooth system, hands free. 

- Play music with mobile phones, smart phones, LG phones, tablet PCs, laptops, etc. through Bluetooth 

-With volume control, you can adjust the volume as your want. 

- Able to connect 2 mobile phone at the same time

- Around the back of the head, wearing style 

- Unit size: 16x 19 x 1.5 cm

- Material: ABS

- Bluetooth Version: 4.1

- Bluetooth effective range: 10m 

- Power Supply: with Built-in rechargeable Lithium battery; charge it via USB cable connection  

- Accessory: USB charging cable