The Aquatec seal on the shaver makes it 100% waterproof. Use it in the shower with your favourite shaving gel or foam for extra skin protection. Naturally, you can also shave dry for convenience. When you are done, simply pop the heads open and rinse under the tap to easily clean your shaver. An energy-efficient, powerful lithium-ion battery gives you more shaves per charge. Charge it for an hour, and you'll have up to 50 minutes of shaving time - that's around 17 shaves. Charge it for 3 minutes and you'll have enough power for one shave. Rounded low-friction protection heads adjust to the curves of your face to limit skin damage. The first blade raises each hair while the second blade comfortably cuts below skin level, for really smooth results.