The Lezyne Strip Drive STVZO Rear Light is an extremely powerful taillight with an STVZO optimized lens and two ultra bright LEDs providing class-leading brightness. Lightweight, durable construction is IPX7 waterproof rated. Wide Angle Lens for up to 270° of visibility. Three output modes offering up to 36 lumens of output. Micro-USB rechargeable for up to 13 hours of runtime. New compact design is more versatile and can mount to round or aero style seatposts.Lezyne Strip Drive STVZO Rear Light SpecificationsMAX LUMENS: 36WEIGHT: 53gMAX RUNTIME: 13 hoursRECHARGE TIME: 2 hours