Bike Light Set,water Dirt Proof ,4 Lighting Modes,easy To Use Mounting System Easy To Use Mounting System: No tools required | Mounts and unmounts within 2 seconds | Mounting strap is used to mount the bike light onto things that have thick surfaces like handle bar, seatpost, seat riser, etc. | Mounting clip is used to mount thebike light onto things that have thin surfaces like backpack, jacket, shoes, etc. Colour: Multicolor Size: 4.5*5*4cm Quantity: 4pcs 1.As different measuring methods,it will occur 1-3 cm deviation about the items,please ensure that cm it is okay for you before ordering. 2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding 3. Only the above package contents, excluding other products