XGIMI DLP-Link Liquid Crystal Shutter Rechargeable 3D Glasses for Z4 Aurora and other DLP 3D Projector TV 80mAh bulid-in rechargeable lithium battery, can work continuously for 80 hours on a single charge 178wide view angle and size of the 3D glasses lens enlarge 10% than normal 3D glasses. Enjoy the excellent 3D effect at any position Adopt less than 2.0ms response light valve LCD lens. Luminousness has increased 8%; also, the definition and colorfulness of images have enhanced Containing smart chip, the 3D glasses only turn on when it receives DLP-Links signal; and it goes to ready mode when the signal is disappear. Compatible with XGIMI PROJECTOR AND OTHER DLP-LINK 3D PROJECTOR