Electric Razors

Electric razors run the gamot from full-blown shavers you could shear a sheep with, to tiny battery-operated facial trimmers.
Electric razors are handheld devices with motorized blades which do the cutting for you.
They can come with many attachments for different lengths and areas.

ELECTRIC RAZORS - HOW TO USE
Electric razors are pretty straightforward. On dry skin, simply run the razor across the desired area. If needed you can apply a little baby powder to soak up any excess moisture and help it run smoothly. Unless your model is a particularly large one you shouldn't need to worry about cutting yourself.

ELECTRIC RAZORS VERSUS OTHER METHODS
Electric razors are extremely quick, 99.9% painless, and cost nothing after the initial purchase. However they do not give a very close shave. This may be a good thing if you are prone to razorburn or ingrown hairs, but if your hair is very dark you will probably be left with visible stubble.
Expect to spend $13-$25 for a tiny facial groomer, $60-$100 for an 'intimate' shaver, and $38-$160 for an electric beard shaver.