The topeak redlight mini usb is a bright and super effective rear light that will keep you clearly visible to vehicles and other road users approaching from behind the light is compact and super lightweight with 3 bright 02w red leds which provide excellent visibility the light can be attached to your seatpost via the simple and easy to use rubber straps the light can also be clipped onto the back of a saddle bag or back pack via its clipping system with 11 lumens 3 leds and 3 modes you