Blackburn Local 15 Rear Light Super bright 15 lumen twin LED rear light The large power button is easy to turn on/off whilst pedaling or wearing gloves The flexible silicone mount fits to all seatposts diameters & shapes Also has a versatile wire clip attachment that allows it to be fixed to shoulder straps, panniers or pockets Three light modes; 48hrs solid, 95hrs steady flash, 108hrs strobe Uses AA batteries