Laser Beam Waterproof LED Bike Bicycle Cycle Rear Back Tail Lights Light Lamp3CDescription:High Quality laser bicycle safety laser lightsUse for student， baby stroller，jogging， walking， bicycles， car emergency， horse¨Criding， road emergency;camping，ETC.High brightness laser light to warn on the roadConstant laser light for safetyPowered by 2 AAA batteries (not included)Specification:3 super bright LED2 laser launcher260 degree wider visability3 Modes: flash model 1 / flash model 2 / steady lightingWork time: 9-36 hoursSeatpost size: 20-36mmTool free installationCertification: CE ; RohsPackage Included:1 x Bicycle Light Laser