Highlights: Call duration: 5-6 hours Play time: 5-6 hours Transmission distance: 12m Wireless frequency: 2.4GHZ Bluetooth version: V4.2+EDR Bluetooth Profiles: HSP1.2、HFP1.6 、A2DP1.3、AVRCP1.5、D11.3 Battery Capacity: 90mAh Standby time: about 100 hours Working temperature: 10°C-50°C Charge Time: about 1- 2 hours Material: plastic Charging voltage: DC 5V Size: 71.9*43.6*7mm Mic sensitivity: 42Db Product Description: COMFORT WEARING – Be free to choose exchange your left and right ear wearing, with glasses do not affect the wear. Compatible iOS, Android, WP system, as long as the devices have Bluetooth, it can be used. CLEAR CALL AND HIGH QUALITY – Built-in high-performance lithium battery, 5-6 hours continuous play, 5- 6 hours continuous call, 1-2 hours 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. SINGLE 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. Bluetooth 4.2 Bone conduction headphone Weight: 0.3 What’s in the box: 1 x USB cable 1 x Bone conduction headphone 1 x Manual SKU: 191027051025