light-operated,Easy installation Solar panel:0.3W battery :Ni-Mh,1200mAh Flash rate:80-90times/minuteview distance :over 500m LED Qty : 4pcs working time :3-5days by shined for 8 hours LED color :Red/Yellow/Blue/Green/White with standard luminous intensitysize :140*130*28mm material :Aluminum alloy Appkication :Road,Crosswalk ,Highway,Carport solar road studs