1. Bluetooth V4.1 ear hook earphone, mini and portable, comfortable to wear.
<br />2. Built-in 50 mAh polymer battery, Charging box 430 mAh.  The bluetooth earphone charging once up to 3-4 hours of continuous talk time, 2-3 hours of music time. Standby Time is up to 120 hours.
<br />3. Charging indicator: the battery status will display on your phone. (suggest use adapter for charging)
<br />4. Long pressing on the button you can into pairing mode, and quickly double-click you can switch to English or Chinese Mode until the indicator blue & red light is flashing alternately.
<br />5. Support 99% of bluetooth-enable devices,such as mobile phones, laptop computer etc.
<br />6. Support IOS, Android, Windows System and MAC OSX System
<br /> 
<br />Specifications:
<br />Item Name: Mini Bluetooth Earphone
<br />Bluetooth Version: V4.1+EDR
<br />Impedance: 32 
<br />Sensitivity: -42dB 
<br />Frequency range: 20-20KHz
<br />Transmission Power: Class 2
<br />Transmission Range: 10m
<br />Radio frequency: 2.402-2.480GHz
<br />Color: White, Black
<br />Music Time: 1-3h
<br />Talk Time: 2-4h
<br />Standby Time: 120 hours
<br />Charging Time: About 2h
<br />Bluetooth Earphone Battery Type: 50mA rechargeable polymer battery
<br />Charging Box Battery Type: 430mA rechargeable polymer battery
<br />Output Power: 30mW
<br />Power System: AC110-220V / DC5V
<br /> 
<br />The Package include:
<br />1x Mini Bluetooth Earphone
<br />1x USB Cable (Without Charger)
<br />1x User Manual
<br />1x Charging box
<br />1x Package
<br /> 
<br />Note: The bluetooth is only for one ear, not a pair.