Updated version of the 400 lumen AMPP400 with improved function and design Clearer lens, mode memory, improved run times and larger glove-friendly power button Double clicking the illuminated power button instantly switches to brightest setting Hyper constant flash setting is attention grabbing even in full daylight Large side lens for a wide beam and enhanced side visibility Single stage battery warning light at 20 percent or less battery life Up to 60 hour runtime on flashing mode