3D Digital System : best View ADF-4000 Convenient - Automatic 2D to 3D Changeover (Auto-detecting) - Auto-Adaptable to HFR (192, 240 FPS and beyond) - Simply Set-up in front of projector - Delay time Adjustment Function - Just plug synchro cable into 3D sync port of projector Low Maintenance Cost - Uses inexpensive passive 3D glasses - Long Life with wide window(Heat protection) Specification - Aperture : 205mm X 105mm - Dark Time : 400us - Type : Circular polarization - Optical Efficiency : 39%±1% - Chanel Crosstalk : 0.8% 125:1 - Frame Setting : Automatic - Power : AC 110~220V / DC24~26V