Function: This helmet light suitable for night riding and can effectively attract the attention of other vehicles, avoid potential dangers, and increase your visibility. Outstanding Features: This lamp is portable with compact size, which will not occupy much space, or add burden to the helmet when you worn on. High Performance: The helmet warning light features IPX6 waterproof performance, effective in foggy, rainy and humid weather to make sure driving safety. Wide Application: Tail light warning light is used in helmet and suitable for motorcycles, bikes, and off road Atv etc. Provides 4 lighting modes, giving you a good driving experience. Simple operation: You just need to stick the light on the back of the safety helmet, easy to install and remove, plug and play, suitable for any helmets.