You get a blade for your face and one with a skin guard for your body. OneBlade does it all. OneBlade doesn't shave as close as a traditional blade - so your skin stays comfortable. Go against the grain and shave off any length of hair easily.
The philips one shave 360 pro is the best beard trimmer I've used. It has a very long battery life of 90mins, a guide comb that's easy to adjust, it cuts really good quickly and is very quiet.