The Philips S5420 shaver has rounded profile MultiPrecision Blade heads to protect your skin. The heads also have 5-direction flex to maintain close skin contact even around the neck and jaw line. This shaver is Wet and Dry and can be used in the shower with gel or foam. The skin friendly Click On trimmer is ideal for finishing touches on your moustache and sideburns. The lithium-ion battery recharges in an hour for 45 minutes of shaving time.