Item: X9 Mono Bluetooth Headset
Super Slim Metal Shell
Bluetooth Version: V2.1
Mode: Handsfree/headset
Operation range: 10meters
Frequency: 2.4GHz
Transmit power: Class 2
Built-in rechargeable lithium-ion battery
Talking time: 4 hours
Standby time: UP to 100hours
Unit size:50x16x4mm
Unit net weight: around 10G
Accessories: USB Cable, earhook, manual
Feature:
●Stylish & Fashion design
●Support all bluetooth enabled devices
●Good sound
●Low interference   

●Answer/End/Reject incoming call, mute, redial function