Summary: Not really thrilled with this purchase. Razor only has 2 vibrating blades under the appearance of the 3 foils. There may be something that moves for the third, but I don't see it nor does my beard realize the results. The 4th blade is only for the long hairs and on two days growth works pretty well.
Summary: I've used a blade for 50 years, largely because my whiskers tend to grow out "flat" on my neck and jaw line. My brother asked me if I still used a blade - his whiskers grow the same as mine - and he raved about this Panasonic. After one nick too many I took the leap and bought the ES-RF31-S.
Summary: The ES-RF31-S4 Shaver can be used wet or dry. It can be used in the shower or in your car. Doesn't matter because it does not work worth a spit. I have tried just about every product assist I can find and nothing seems to help.