The Philips S3510 shaver is a convenient, easy shave. It has rounded edge ComfortCut Blade heads to protect your skin and 4-direction flex to easily shave every curve. This shaver is Dry only but is rinseable under the tap for easy cleanup. The Pop Up trimmer is great for finishing touches on your moustache and sideburns. The lithium-ion battery recharges in an hour for 50 minutes of shaving time.