Features:
100% brand new and high quality.
Headphone use the Bone Conduction speaker so the sound can pass through the skull directly to auditory center， which eliminates many steps of acoustic transmission， it can achieve clear sound reduction in noisy environment
Material soft， comfortable wearing， feel is good.
Dustproof， thermal effect is very good.
According to the person face design， keep out the bridge of the nose the following part， the bridge of the nose department have aluminum sheet fixed， to prevent the slide.
Mouth have ventilation holes， the magic stick fixed.

Specifications: 
Bluetooth version: 1.0
Playback time: up to 7 H
Standby time: up to 15 days
Fully charginf time: 2 H
Color: Blue， Grey

Package Includes: 
1 x Bluetooth Bone Conduction Headphone Anti-pollution Face Mask
1 x USB charging cable