Features:
Bluetooth: V4.1
2 devices can be matched
High quality materials, lightweight body allows you to wear more comfortable
It has built-in high-quality battery
Compatible with various brands of Bluetooth phones and Bluetooth notebooks, tablet PCs, MID, etc.
 
Specifications:
Wearing type: Invisible In-ear 
Feature: Wireless Headphone
Function: Answering phone, Bluetooth, Microphone
Connecting interface: Micro USB
Application: Mobile Phone, Sport
Power supply: Built-in rechargeable battery
Bluetooth version: V4.1+EDR
Bluetooth mode: Hands free, Headset
Product weight: 4g（The lightest earphones）
Charging time: 1h
Working time: 4-5h
Standby:120h
 
Package Including:
1x Bluetooth headset
1x Usb charging cable
1x User manual
3x Ear cap