LED indicator light flicker to prompts operation, simple operation. Support one key left and right eye switching. 3D glasses can work with glasses to provide you with more vivid 3D scene. Active shutter 3D glasses are suitable for DLP-Link 3D projectors, which will bring shocking 3D effects to you and your family. Widely compatible, also suitable for Acer, for BenQ, for Optoma, for Viewsonic, for Infocus, for NEC, for Vivitek, etc.<br><br>Product name:3D Glasses Don't support TV 3D Lens material:liquid crystal Charging time:2 hours Working time:40 hours Available distance:8 meters Colour:Black Material:PC+LCD lens<br><br>Package Contents: 1 x 3D Glasses 1 x USB charging cable 1 x cleaning cloth(Color is random, no specification is accepted) 1 x Glasses bag(Color is random, no specification is accepted)<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.