Computers are no longer mysterious, they help us in every aspect of our lives such as on surfing internet, watching movie and playing games. Right now, PCs are more powerful with the help of 3D technology, you will more “involved” in movie, game and any other 3D presenting. Hi-SHOCK fashion and lightweight 3D glasses are must cool stuff for PC game players, delivering a full-resolution 3D experienceand give your full immersive gaming experience like never before. Specification Weight (contain battery) : 50g Shutters: Light-speed LCD shutter Power management: Power button + Auto OFF Field rate: 120HZ Contrast ratio: 1000:1 Transmittance: 38+/-2% Sync operation: IR Operation temperature: 0°C-40°C Storage temperature: -10°C-75°C Power supply: one pieces CR2032 cell battery Battery life: 200hours continuously working Comfort: spring load earpieces Product Feature: 1) Excellent color accuracy& high contrast bring you optimal 3D viewing experience; 2) High-tech light-speed LCD shutter technology; 3) Stylish appearance 4) Intelligent synchronization 5) Anti-interference IR Communication 6) Lightweight & comfortable 7) Energy efficient 8) Auto standby 9) Auto low power detection 10) Replaceable battery