Xpand X102-XP2PK Radio Frequency Extension for YOUniversal Electronic 3D Eyewear 3D requires as much light as possible. XPAND X102 Series features the fastest shutter technology for the brightest image XPAND X102 Series is optimized to work with DLP chips. To better manage battery life, the DLP-Link 3D Glasses Series glasses turn "OFF" automatically