Lezyne's Super Drive XL features a CNC-machined aluminum body that is lightweight, durable, and promotes LED efficiency. Constant Lumens power management drives LED performance at a bright 700 lumens. Overdrive Race Mode allows quick switching between Overdrive and Economy to optimize the power use for any occasion. The Side Visibility Cuts allow for 180 degrees of visibility. The Infinite Light design allows you to replace the Li-ion battery on demand. The Intelligent Power Indicator button allows you to check the power level any time while recharging is simple with the fast, high efficiency 2-amp wall adapter or micro-USB cable for convenience. The Super Drive XL comes with Composite Matrix handlebar mounts (25.4mm and 31.8mm) and two rubber shims.