3d glasses with high water-proof function

3d glasses Family 3D TV glasses with light-speed shutter LCD refresh rate: 120Hz Contrast rate: 1/1000 Transmission: 50% Reception distance: 7 meters Viewing angle: 80° Battery life: 300 times Continually using time: 70hr Standby time: 350hr Recept type: IR charging type: USB charging time: 4Hrs Special fit for one TV signal (mult-channel option) With high water-proof function,hard coating for lens. Support Ultrasonic cleaning and repeatly cleaning. Suppport software upgrading. With various nose pad for different face structure. Human electric circuit design, automatically shift between on and off according to signal without any electricity switch. With Intelligent synchronization