Electric shavers are divided into two types based on the blade action mode: rotary and reciprocating. The former has a simple structure, low noise, and moderate shaving force; The latter has a complex structure, high noise, but strong shaving force and high sharpness. Rotating electric shavers can be divided into several types according to their external structure, including straight tube, elbow, charged push shear, and double head (see figure). The first two structures are relatively simple, while the latter two are more complex. Electric shavers can be divided into three types based on the original type: DC permanent magnet motor type, AC/DC dual-purpose series excited motor type, and electromagnetic vibration type.