This product is universal for all kinds of motorcycles and bicycles. It does not hurt the helmet and uses double-sided glue, with minimal residual gum after removal. The service life is about 5000 hours. The product is firm, not easy to age, and the flashing bar is waterproof. It has 3 modes: Always On, Flash, and Fast Flash, which can be switched via the controller. The product type is a helmet DIY glow stripe sticker, available in multiple colors, and is powered by 2 AA batteries (not included). The package includes 4PCS of helmet light bars, an extension cord, a connection harness, and a controller.