Spec:
-Blackbear1 BB1-1 for Cinema
-Weight:60g 
-Color: black        
-Ratio: 1000:1        
-LCD refresh rate: 144Hz
-Transmittance: 40%±2%   
-Power supply: CR2032 lithium battery 
-Battery lifesspan: 200 hours         
-Sync operation: IR   
-Working current: 0.7mA
-Standby current: 5uA
-Working temp: -10°C~50°C 

Expand 3D glasses, High transmittance,Light weight with less than 56g,Low consumption,changeable batteries,Automatic standby function,after 3 min without synchronized signal,glasses automatically go into standby mode.