Shavers can be divided into two types: rotary and reciprocating. The advantages of rotary type are less harm to skin and low noise, while reciprocating type is more suitable for men with hard beards.

You can distinguish it by the type of cutter head. Rotary can rotate 360 degrees, which is the choice of most people. There are two cutterheads with multiple positions, and the blades move in a circle. If facial beard is not very thick, you can choose this type. The forward duplex structure is relatively simple, and the principle is basically like a hair clipper for a haircut. The movement direction of the blade is to cut the beard left and right, which is cheap, but the use time is not long.

2, according to the appearance:

According to the external structure, the flying shaver can be divided into straight tube type, curved head type, electric scissors type and double head type. This is easy to distinguish. Just look at the outer packaging when you buy it. The upright and curved ones are shown in the left and left pictures below. A scraper similar to a barber is added for pushing and cutting, and the double head has two rotating cutter heads.

3. Distinguish the number of cutter heads

The head of the early electric shaver was designed with a single head, so it was impossible to shave the beard clean. With the development of technical design, the design of double cutter heads and three cutter heads has been developed to obtain better shaving effect.

Double-blade electric shaver has always had a good shaving effect, but it is not easy to shave off small beard residue or curved angle of chin. In order to solve this problem, the new product adds a "third knife" design, that is, a third knife is added between the two knives. When the double knives sink into the skin, the third knife will completely scrape off the stubble that cannot be scraped off.

Extended data:

Philips first invented the rotary cutter head, and later developed it into a Felishev electric shaver, which laid the foundation for the breakthrough of transistors and integrated circuits.

Philips series electric shavers are multi-head and single-head, and there are many kinds. When shaving, they are both veneer and quick. The cutter head can move flexibly in five directions, giving you a quick and close-fitting shaving experience. The curved edge can move smoothly on the skin, protecting the skin while shaving. Both wet and dry, you can enjoy a comfortable dry shave and a fresh and clean wet shave.

References:

Baidu Encyclopedia-Philips