3D active shutter glasses for children

Our kid 3D glasses is specially made for children between 4 to 12 with the major features of kid-like-style and light-weighted. 1)Professional design forchildren 2) Lightweight with less than 40g 3)High transmittance with the best 3D experience 4) 80 hours long life use through full USB charger. 5) ) Extended viewing range allows you to enjoy 3D in any placesat home 7) Compatible with SAMSUNG & SONY 3D TV alternatively Electronic parameter 1)LCD refresh rate: 144Hz 2)Power supply: USB charger 3) Working current: 0.7Ma 4) Standby current: 5Ua 5) Ratio: 1000:1 6) Sync operation: IR 7) Transmittance: 40%±2% 8)Battery lifespan:80 hours for one full USB charger 9) Working temp: 0°C 40°C