Dual speakers, directional sound, maintain privacy and accurately transmit the sound to your ears Optimization and upgrades from chips to headsets and speakers to ensure effective reduction of call noise and restoration of fidelity Stable performance, strong compatibility, and stronger functions bring you high-definition call sound quality Magnetic charging, glue-sealed cover, waterproof and sweat-proof, washable lenses without worrying about water intrusion Calls are clear, and the unique algorithm can isolate most environmental noise. The high degree of sound restoration is exactly the same as talking directly on a mobile phone. Perfect echo processing, comfortable calls Bluetooth 5.0 chip, (Actions latest 3015) Bluetooth signal is strong, connection is stable, and the distance is up to 10 meters Specification: Glasses size (mm): L*W*H=146*144*52.5mm Lens size: 55 mouth 16-142 Bluetooth chip manufacturer: Actions Chip model: 3015 Compatible systems: iOS and Android FLASH memory: 16MB Amplifier board: TI tpa2012d2/Fangtek 2011 BT: BT5.0 Capacity: 100mAh Charging method: magnetic charging Lens material, etc.: polarized lens Waterproof grade: IP5 Charging time: about 60 minutes Battery life: 80% volume iOS, as long as 6 hours Product language: English Appearance material: TR90 Note: 1. Actual color may be slightly different from the image due to different display and light effect. 2. Please allow 1-3cm deviation due to manual measurement.