... battery we have both 2.light weight,good looking 3.High quality,SYNC perfectly DLP Link glasses for ... 38%±2% -Power supply: CR2032 lithium battery or button cell -Battery working time: lithium battery , 40 hours;Button Cell, 210 hours;-Sync operation: VR - ... wearing-Low consumption,changeable batteries-Automatic standby function,after 3 min without synchronized signal, glasses automatically go into ...