3D Shutter Glasses Kit for cinema 3D projector and 3D LCD: IR 3D glasses kitsLCD refresh rate: 120 to 480Hz120hz or higher CRT and 3D LCDPower supply: CR2032 button cellRatio: 1000:1Transmittance: 38 ±2%Unbeatable compatibilityUse with 3D ready projectorActive 3D cinema systemHigh-speed shutter technologyNo ambient light interferenceLightweight:50gWear over prescription eye-wearStylish appearanceNo installationFlexible earpiecesAuto on/offLow power detectionReplaceable battery