Features: Support all DLP-LINK projectors.  The optical communication method, work without the emitter.  Two minutes without signal automatic power off, power saving. 4.Working about 50 hours with full charge.  High transmittance LCD provide perfect 3D experience. Active shutter technology, full HD, and no flicker.  Low power alarm function. Left and right eye switching is possible.      Specifications: Model Number: GL410;  3D Glasses Type: Active shutter glasses;  Synchronous: DLP-LINK;  Display Compatibility: DLP-LINK 3D projector;  Frequency: 120Hz;  Response Time: 2.0 ± 0.5ms;  Contrast: 1000 : 1 ± 200;  Transmission: 38% ± 2%;  Battery Type: 3.7V/90mAh rechargeable lithium-ion;  Battery Life: about 50 hours;  Atmospheric Pressure: 86 kPa - 106 kPa;  Charge Time: 2-3 hours;  Relative Humidity: 20% - 80% RH;  Environment Temperature: 0 °C - 50 °C;  Dimension: 68 * 58 * 43mm;  Net Weight: 46.1g / 1.62oz;  Package included: 1 * GL410 3D glasses;  2 * Nose pieces;  1 * USB charging cable;  1 * Cleaning Cloth;  1 * Glasses Bag;  1 * User Manual (Chinese & English)