traffic warning light can install on rubber cone with small solar panel, needn;t battery Power 1.2V 0.5W Traffic warning light with solar panelcan work as warning or emergency light on the road. easy installing.1. power 1.2V 0.5W1, solar panle power 2V 80mA1, dia 9cm, dia of pole is 3.5cm1. switch on the base of polethis road warning light is very smart and light. traffic warning light for road