Main features: Beautiful style, according to the streamline style designed by human body engineering, delicate craftsmanship, suitable to the wearing of different people. The least volume, 60*18*11mm. Lightest weight, only 9.8g Comfortable wearing, no feeling of crashing down and oppressing .it can be worn for a long time Standby time up to 168 hours. Super low radiation. High usage efficiency: Super compatibility, so that when changing cell phones, there is no need to change headset. Least volume, lightest weight, wearable usage for a long time. Products specification reference Bluetooth technology, compliant with Bluetooth specification v1.2 Environment, operating temperature:-20癈 to 60癈 Size\weight, 60mm*18mm*11mm Weight, 9.8g