The Strip Alert Drive is an advanced LED bike tail light with Lezyne's “Alert” technology. When decelerating, the light will turn solid like a brake light and then provide a distinct flash pattern once stopped to alert riders or vehicles from behind. The light will then change back to its previous output mode once the rider resumes their ride. Wide Angle Optics lens that provides up to 270° of visibility. Five LEDs for up to 360 lumens of output with 11 output modes for day or night options. FEATURES: Recharge Type: USB Lumens Rear: 360 Weight: 66