The Optoma BG-ZF2100GLS Active Shutter RF 3D glasses offer the best 3D viewing experience available in today’s market. Our most comfortable 3D glasses are both lightweight and stylish at just 0.1 pounds and come with interchangeable nose pieces for customized comfort. Improved contrast and black levels produce exceptional images and the RF (radio frequency) based synchronization promise that your image is always in synch. These Active Shutter RF 3D glasses are rechargeable and are designed for use with Optoma projectors with 3D VESA output and synchronization. Experience 3D like never before with the BG-ZF2100GLS Active Shutter RF 3D glasses.