1,High quality and lower price 2,High brightness 3,Good after-sales service 1,reflective luminous : yellow, white, red2,illuminator intensity : 18000mcd/pcs(white) 10000mcd/pcs(yellow/red)3,flash frequency:60 times/min , duty factor : ≥30%4,Visual range at night: > 1200m5,working temperature : -25°C- +65°C6,battery life>20 months( change) led Traffic Luminous protuberance