The Remington HC7170 ProPower Titanium Ultra is fully waterproof. This is quite extraordinary for hair clippers, and very useful. Especially because you can use it in the shower to quickly trim your edges as well. Set the trimming length on the included trim combs and create a nice gradient, thanks to the wide range from 1 to 44 millimeters. Switch on the turbo mode to effortlessly shave off longer hairs. You don't have to charge it often, since the battery lasts up to 90 minutes. The display indicates precisely how many minutes the battery has left. Is it empty? Simply charge it via a USB port.