Main Features: ● Bluetooth V4.0 quickly pairing， the transmission range up to 10m.
● Waterproof and sweat resistance， design for sport.
● DSP noise reduction technology， effectively isolated from outside sound.
● HiFi stereo sound and strong deep bass to provide a music world.
● 55mAh Li-ion battery， 4 hours playing time.
● Only 7g， lightweight and comfortable to wear.
● Power display on iPhone screen.

Specification:
Input charging: DC 5V， 300 - 500mA
Charging time: 2h
Standby time: 120h
Impedance: 85 ohm
Sensitivity: 121 + / - 3dB 0.052 Package weight: 0.077 kg
Product Size(L x W x H): 4.80 x 1.60 x 0.70 cm / 1.89 x 0.63 x 0.28 inches
Package Size(L x W x H): 18.00 x 10.00 x 4.50 cm / 7.09 x 3.94 x 1.77 inches Package Contents: 1 x Earphone