Small but mighty, the Kepler E-bike Tail Light offers up 220 degrees of visibility Compatible with any 6V-15V e-bike system, this slick little light is loaded with 3 super bright red power LED`s Includes Bosch E-bike System plug The Bosch plug can also easily be clipped off for direct wiring into other e-bike systems Seatpost or seatstay mounting compatible Black 1 Rear Seatpost 25UPC/EAN/GTIN: 812938014550