Mini hidden design, invisible and unattractive
Echo cancellation, noise reduction technology
Support high quality stereo music play
Built-in HD and sensitivity microphone. Idea for in-car calling or working use. Support A2DP, makes you enjoy clear and natural sound when calling
Built in high capacity rechargeable battery, up to 3 hours of talk time, 120 hours of standby
Can connected with two smartphone at the same time.
Compatible with most Bluetooth-enabled devices. This will connect automatically with a phone paired previous
LED indicator light to ease your operation
Perfect for sports, running, cycling, climbing, etc

Detail:
Bluetooth Version: V4.1+EDR
Transmission Rate: Class2
Wireless Frequency: 2.4-2.48GHz
Transmission Distance: 10M
Charging Time: 1hour (Charging voltage 3.7V )
Talk/Music Time: 3 hours
StandBy Time: 120hours
Color: Black \ White \ Skin Color \ Blue \ Pink

Includes:
1 * Bluetooth Earphone (Single-piece, not pair for left and right)
1 * USB cable
1 * User Manuala