Sharp really has thought of everything with their 3D glasses for their Quattron televisions. No only do they use an active liquid crystal shutter technology to wirelessly interpret signals sent from your 3D HDTV, they also have up to 75 hours of continuous operation, and an auto shut-off feature if they don"t receive a signal for 3 minutes. Plus, they can be worn by anyone, big or small, so you don"t need a special set of glasses for junior. Finally, they"ve added a button to convert the 3D signals into a 2D picture, just in case you don"t like the 3D picture (whatever your reason may be), so everyone can enjoy the same movie.