3D DLP-Link Active Shutter Glasses for viewing 3D images and 3D visions from DLP Link 3D Projectors,Support 96-144Hz DLP-Link, Build-in rechargeable battery, which can hold a charge for up to 45 hours of use. very light,comfortable wearing,and the excellent LCD lens offer bright and 3D experience . Warm tip:If you cannot make sure if our glasses can work with your projector, there are 2 ways to confirm it 1:The 3D signal receiving window can receive the DLP-Link signal. As soon as you use 96-144Hz DLP-Link 3D projector and connect thru 3D image source,our glasses can work perfect with your projector. 2: Or if your projector has the logo of "DLP 3D Ready" below, our glasses also can work 1.DLP link technology working mode 2.Micro-USB rechargeable 3.7V Lithium Battery,standby time 180 days, 3.Continuous working 45 hours 4.Super fast 144Hz refresh rate. 5.Low-power design,can charge by USB. 6.Compatible with for / for / for / for / / for series DLP projector 7.Excellent lenses offer bright and 3D experience; 8.Adopt the newest active shutter technology, high definition and no flickering or crosstalk Colour:B:Black Material:plastic Package Contents: 1Pair x 3D glasses 1 x USB charging cable 1 x Cleaning cloth 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.