Description: 3D Glasses type:Active shutter Synchronous:Bluetooth 3.0 Display compatibility: Active Shutter Type Screen Frequency: 96~144Hz Response time: 2.0ms Contrast: 750:1 Transmission: >=37% Battery Type: CR2025 Button battery built-in battery Operating temperature: 0~40'C Relative Humidity: 20%~80% Atmospheric pressure: 86 kPa~106 kPa Features: Delivers a true 3D experience - For watching your favorite movies or playing your favorite games in a new way. Bluetooth communication method work without emitter. Compatible with 3D active shutter type TVs models of Xiaomi /Sony/Panasonic/Sharp/Toshiba/Mitsubishi/ Philips /LG Support Bluetooth 3D TVs High-speed response of high-quality liquid crystal lenses preventing your eyes from eye strain. The appearance of innovative treatment process to eliminate electromagnetic interference. The frame using ABS + PC material low energy low carbon and environmental protection. With auto power-off function stable energy-efficient. Note: Compatible with active shutter type 3D TV