Description: 
Unique in-ear design guarantees earphones closely fitting to ears and will not fall off when you are working out. Meanwhile, audio performance has improved greatly.

Main Features: 
- Waterproof and sweat resistant, no matter sweating in gym or running in rainy day, it will be with you.
- NFC technology, isolate noise and let you immerse yourself in the music.
- Wireless earphones, free from wired.
- With drive-by-wire design, all in your hands.

Specification: 
Bluetooth: V4.0
Bluetooth transmission distance: 10m
Battery: 80mAh Li-ion battery
Talking time: 8h
Music time: 7h
Charging time: 1 - 2h
Impedance: 16 ohm
Frequency: 20 - 20KHz
Waterproof: IPX7 0.089 Package weight: 0.116 kg
Package Size(L x W x H): 9.00 x 3.70 x 16.00 cm / 3.54 x 1.46 x 6.3 inches Package Contents: 1 x Earphones, 1 x USB Cable, 4 x Earbud, 1 x English User Manual