5-in-1 comb adjusts from 1mm to 5mm for stubble and short beards 360-degree blade flexes to follow facial contours Stainless steel blade lasts up to 4 months of use Waterproof IPX7 design for wet or dry use, including in the shower Runs on 1 included AA battery with about 45 minutes of use Includes blade, 5-in-1 comb, protective cap, and USB-A charging cord