Features:COMFORT WEARING - Be free to choose exchange your left and right ear wearing, with glasses do not affect the wear. Compatible FOR iOS, for Android, for WP system, as long as the devices have Bluetooth, it can be used.Bluetooth 5.0 Bone conduction headphoneSINGLE EAR HOOK TYPE HEADPHONES - Small and covert, more comfortable. is very light, painless wearing in long time use, latest concept ergonomics design fully fit outside the auricle.CLEAR CALL AND HIGH QULITY - Built-in high-performance lithium battery, 6-8 hours continuous play, 9 hours continuous call, 2hours fast charge.SPEAKER UNIT IS EXTERNAL - Loudspeaker close to the ear but it is not inside the ear. It will help listens to the surroundings at the same time, let you keep safety for biking, running, driving and more portable for business, work.Specifications: Bluetooth Profiles: HSP1.2HFP1.6 A2DP1.3AVRCP1.5D11.3 Bluetooth version: V5.0 Wireless frenquency: 2.4GHZ Mic sensitivity: 42db Call duration: 10 hours Model: 04D Size: 71.943.67mm Battery Capacity: 140mAh Transmission distance: 10-20m Play time: 6-8hours Standby time: about 200 hours Charge Time: about 2 hours Charging voltage: DC 5V Product name: bone conduction headphone Material: ABSPackage Included: 1 * USB cable 1 * bone conduction headphone 1Manua 1Retail box
