Main features:l Beautiful style, according to the streamline style designed by human body engineering, delicate craftsmanship, suitable to the wearing of different people.l The least volume, 60*18*11mm.l Lightest weight, only 10.8gl Comfortable wearing, no feeling of crashing down and oppressing .it can be worn for a long time l Standby time up to 168 hours.l Super low radiation.High usage efficiency:l Super compatibility, so that when changing cell phones, there is no need to change headset.l Least volume, lightest weight, wearable usage for a long time.Products specification referencel Bluetooth technology, compliant with Bluetooth specification v1.1l Environment, operating temperature:-20癈 to 60癈l Size\weight, 60mm*18mm*11mml Weight, 10.8gl Standby time, a week.