SainSonic Universal Rechargeable 3D Active Shutter Glasses Compatible with All Active 3DTVs, Black Universal 3D Glasses - works with all active 3D TVs with infrared technology Communicate with the TV's emitter - To create a beautiful, full HD 1080p 3D experience Wide 3D viewing angle for multiple viewers/players,High transmission ratio for bright images Rechargeable--Integrated Battery can used for 50hours after 3hrs fully charging The fastest shuttering speed eliminating headaches, fatigue, and eyestrain