Overview:
The bone conduction headphone releases your ears, providing you a healthy and safe way to listen to music. Using innovative bone conduction technology, the headphone conducts the sound through the bone. It transmits sound to the bone near the external canal, then to the auditory nerve. Effectively avoids the occurrence of ear damage and hearing loss, giving your healthy listening.

Ear-free Keeping Danger Away:
Release your ears to listen to the world, you can respond to the surrounding situation quickly, far away from danger, suitable for outdoor activities.
BT 5.3 Connection:
BT 5.3 technology enables stable connection, fast transmission speed and low power consumption. Free to enjoy hands-free calls or BT music via BT connection.
Born for Sports:
IP56 waterproof, no need to worry about sweat and splashing water. Ergonomic and 28g lightweight design ensures wearing comfort and stability, suitable for hiking, running, cycling, climbing, driving, etc.
Long Battery Life:
135mAh rechargeable lithium battery provides about 7 hours of playback time on one full charge. And can be recharged via the included charging cable.

Specifications:
Brand Name: Lenovo
Model Number: X3 Pro
BT Version: 5.3
BT Profile: A2DP, HFP, HSP, AVRCP
Operation range: Up to 10 meters (no obstacle)
Drive Unit Diameter: 16mm
Frequency Range: 20-20000Hz
Sensitivity: 86dB
Impedance: 32ohm
Battery Capacity: 135mAh
Music Playing Time: about 7 hours (depends on music volume)
Charging Time: about 2 hours
Color: Black, White (Optional)
Item Weight: 28g/0.98oz
Package Size: 13.4*10.4*5.1cm/5.27*4.09*2.00in
Package Weight: 122g/4.30oz

Package List:   
1 * Bone Conduction Headphone
1 * USB Charging Cable
1 * User Manual (English/Chinese)