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