The Strip Drive Pro 400+ Rear is a cutting-edge rear light offering ten LEDs and a maximum output of 400 lumens; it is engineered for impressive efficiency and runtime, providing the best beam pattern for optimal light dispersion in even the most challenging conditions. Plus, with an impressive 80-hour max runtime, you can rest assured that this light will last as long as you need it to.Key Features:Max Lumens: 400.Max Runtime: 80 hours.Battery Capacity (mAh): 1900.Recharge Type: USB-C.Weight: 71g.Dimensions: 70mm, 37mm, 47mm.Features: IPX7, Daytime Flash.Offering seven different output modes, including the highly disruptive Daytime Flash that grabs attention and the wide-angle optics providing an impressive 270° visibility range. It features a lightweight yet durable waterproof construction, rigorously tested to IPX7 Waterproofing standards. A versatile mounting system attaches to aero or round seatposts, and the light also features USB-C waterproof charging (cable not included). Look