VIPstore&reg; Intelligent Induction wireless brake taillight & Bike Bicycle Intelligent Laser Rear Light 6 LED Sensing Wireless Brake Taillight Warning Lamp Automatically light up when you brake,waterproof design 180 degree adjustment bracket,sturdy and durable and portable 6 Bright Red Leds+ 2 Laser Launchers,4 Flash Modes For Leds And Steady-Flash 2 Modes For Laser Beams 20mw laser shiny and bright, not affected by the street light,visibility is more that one mile. Max Power:500mw,Red Light Wavelength:625nm