ZD201 3D Glasses (DLP-Link)- Wireless 3D viewing using DLP® LinkTM Technology: Compatible with all Optoma 3D capable projectors.- Easy set-up: Auto-sync with on-screen image.- Energy Efficient: Auto Power-off to save battery life.- Durable: Robust design with flexible arms.- Versatile: Can be worn over prescription glasses.Enter the 21st Century with Optoma 3D hardware.When partnered with an Optoma DLP® LinkTM enabled projector, the Optoma ZD201 Glasses allowcompatible content to be viewed in stunning stereoscopic 3D. Our advanced single projector solutions create life size 3D images on any flat surface, inspiring theimagination while making this exciting technology simple, for everyone. DLP® Link™ can only be used with compatible 3D content. Typical applications include use with 3Deducational or 3D design and modelling software. Currently Optoma does not support 3D TV broadcast systems, SKY in the UK or 3D Blu-ray, though support for these applications will require the 3D-XL that is available seperately. Combine your ZD201 Glasses with the Optoma 3D-XL 3D Projector adapter for life size 3D movies,games and sport. Compatible with 3D broadcast signals such as Sky 3D in the UK; 3D Blu-ray players and 3D games from the Sony® PS3 or Microsoft Xbox360. The 3D-XL simply connects between a 3D source and a DLP projector with an HDMI Connection.