Lezyne - Strip Alert Rear STVZO is an advanced LED rear light from the brand Lezyne. It is equipped with our custom programmed ""Alert"" technology, which includes an automatic braking sensor. The light is STVZO certified and features a Wide Angle Optics lens that provides up to 270° of visibility.When you decelerate, the light will turn solid, mimicking a brake light, and then it will flash in a distinct pattern once you come to a stop. This is designed to alert riders or vehicles approaching from behind. Once you resume your ride, the light will revert back to its previous output mode.The rear light has a compact co-moulded construction that is highly water resistant, making it durable and reliable. It is equipped with 5 LEDs, providing up to 150 lumens of output. With 11 different output modes, including a Daytime Flash mode, you have options for any time of day or night.The mounting system is versatile and can be attached to aero or round seatposts. The light is micro-USB rechargeable, ensuring convenience and ease of use. It is the ideal cycling taillight for maximum visibility.