It avoids the occurrence of ear damage and hearing losing, giving your healthy listening.

Hands-free with Mic:
With built-in Microphone, it supports hands-free calls, greatly set free you hands from answering the call during exercise.
Born for Sports:
IP55 waterproof and 38g light-weight design make it suitable for hiking, running, cycling, driving and other outdoor activities.
Ergonomic Design:
The back bone is made of high-end elastic titanium, flexible, undistorted, and environment-friendly, which allows comfortable wearing for hours.
Long Battery Life:
180mAh rechargeable Li-polymer battery provides up to 6 hours of playback time on one full charge and the standby time can last to 7 days.
 
Highlight:
* The sound transmits through the bone to auditory nerve, no need to put into ear, no eardrum damage.
* Listen to HiFi music with CSR Bluetooth chip and CVC noise reduction enhances the call quality.
* Easily control playing / pausing, adjusting the volume, answering / rejecting / ending an incoming-call.

Specifications:
Brand Name: Vidonn
Model Number: F1
Bluetooth: V4.1
Bluetooth IC: CSR8645
Operation range: Up to 10 meters (no obstacle)
Dynamic Unit: 15.3mm
Frequency Range: 20-20KHz
Impedance: 8Ω±15%
Battery Capacity: 180mAh
Music Playing Time: up to 6 hours (depends on music volume)
Standby time: 7 days
Charging Time: about 1.5 hours
Color: Grey-black, Grey-blue, Grey-yellow (Optional)
Main Item Size: 13.0 * 11.6 * 5.0cm / 5.12 * 4.56 * 1.96in
Main Item Weight: 38g / 1.30oz
Package Size: 16.0 * 14.0 * 6.0cm / 6.29 * 5.51 * 2.36in
Package Weight: 285g / 10.05oz

Package List:   
1 * Bone Conduction Headphone
1 * USB Cable
1 * Pair of Earplug
1 * English / Chinese User Manual