1. True bone conduction, no speaker, internal vibration and sound;

2. IP56 grade is waterproof and dustproof, which can prevent sweat from penetrating during exercise;

3. It is made of high-strength titanium alloy, which can be bent at will at 360°, resisting compression and breaking without deformation for a long time;

4. Bluetooth-compatible 5.1 third-generation technology upgrade, more stable transmission;

5. 8 hours of super battery life, about 2 hours of charging time;

6. Charging input: 5V/500mA, battery capacity: 150mAh.