Compact, innovative rear LED featuring a Daytime Flash mode and our custom programmed \\\"Alert\\\" technology. When decelerating, the light will turn solid like a brake light and provide a distinct flash pattern once stopped to alert riders or vehicles behind. The light will then change back to its previous output mode once the rider resumes their ride. It\\\'s constructed from lightweight, durable Composite Matrix and features a stylish machined Aluminium bezel. Its patented 2-in-1 clip/strap system is highly versatile allowing it to strap to posts or clip to a bag. The Zecto Drive - Rear Alert has a maximum output of 35 lumens, five different output modes and a battery runtime of up to 15 hours, it also includes a micro-USB cable. Additional features include side visibility and a replaceable mounting strap. Key Features > Daytime Flash mode. > Custom programmed \\\"Alert\\\" technology. > Constructed from Composite Matrix. > 2-in-1 clip/strap system. > Max. 35 lumens. > 5 Output modes.