1,High quality and lower price 2,High brightness 3,Good after-sales service 1, Visual range at night:> 1000m2,Material :HDPE, ABS3,Full of electric continuous working time:> 25 hours4,Lithium battery life >20months(change)5,Luminous intensity: green/red :> 6000mcd/pcs6,Reflective material : super reflective material7,Duty factor:> 30%8,Working temperature : -25~65°C9,Weather ability :> 4years10, ...