HIGH QUALITY: and high quality material, with waterproof design, the product can not be corroded, flexible and high temperature resistance. The LED Sticker is Super thin, High brightness, cool light No heat ,no UV created or no electromagnetic radiation and Flexible.The controller is made of ABS material, anti-wear, durable, clip-fixed, portable design. UNIVERSAL FIT: Motorcycle helmet DIY light stripe sticker is universal suitable for all kinds of motorcycles helmet. Battery Type: powered by 2 AA batteries.(without battery) 3 MODES:: Motorcycle helmet lights led contains 3 different lighting modes: always on, Flash and Fast Flash; They can change it with the controller. WATERPROOF DESIGN: Waterproof, low power consumption. Has long service life under normal temperature, shockproof. Use double-sided adhesive, easy to clean after peeling off. SAFETY:The turn signal light is attached to a motorcycle helmet for warning effect which is quite obvious especially in foggy, rainy, or snowy weather, or at night or in dark environment. Bright light stand out on the road,which your safety. Product Display Description: and high quality! Do not hurt helmet,use double-sided glue,the residual after tear off is less,a few remain are swabable with cleaner essence can clear clean. ,not easy to age,flashing bar is waterproof. The service life is about 5000 hours. Battery: 2 x AA batteries(not included) Size: 380 x 35mm() Thickness: 0.5mm outer casing colour:Red+black Lamp color:Red Material:ABS Package Contents: 2 x Helmet Light Strips 1 x Double Joint Harness 1 x Extension Line 1 x Battery Case Driver(Batteries Not Included) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.