- Bluetooth Version: V4.0
 - Impedance: 32Ω
 - Sensitivity: -42dB 
 - Frequency range: 20-20KHz
 - Transmission Power: Class 2
 - Transmission Range: 10m
 - Radio frequency: 2.402-2.480GHz
 - Color: White, Black, Beige,Blue,Pink
 - Music Time: 1-3h
 - Talk Time: 2-4h
 - Standby Time: 120 hours
 - Charging Time: About 2h
 - Battery Type: 50mA rechargeable polymer battery
 - Output Power: 30mW
 - Charge voltage: DC5V
 - USB Cable Length: Approx. 5cm
 - Size: 16*15*28mm

Package:

1x Mini Bluetooth Earphone

1x USB Cable (Without Charger)

1x User Manual

Note: The bluetooth is only for one ear, not a pair.