Feature: This product is universal for all kinds of motorcycles/Bicycle in the market. Do not hurt helmet,use double-sided glue,the residual gum after tear off is less,a few remain are swabable with cleaner essence can clear clean. The service life is about 5000 hours. Firm,not easy to age,flashing bar is waterproof. 3 Modes: Always On,Flash,Fase Flash.Can be switched via the controller. Specification: Product Type: Helmet DIY Glow Stripe Sticker Color: Red Light,Light Blue Light,Blue Light,Green Light,White Light,Purple Light,Ice Blue Light Power: 2 * AA batteries (not included) Service life: 5000 hours Long Length:32.5cm Short Length:23cm note: Due to different lighting and screen settings, the color of the item may be slightly different from the picture. Please allow for slight size differences due to manual measurements. Package Included: 4PCS of helmet light bar 1 x extension cord 1 x Connection Harness 1 x Controller (battery not included) No retail box. Safely packaged in a bubble bag.