UEB 5 Blue LED 2 Laser Beam Bicycle Cycling Tail Rear Light Safety Warning Lamp 100% brand new and high quality. Buckle with adjustable lock ring (suitable for any size seatpost diameter) Laser design, energy saved, highlight led with 7 mode,wide visibility design The tail light used to improve the security of night riding and cycling entertainment Two dual light lines on the road send by the laser indicator to keep a safe distance