Alarm clocks can be classified according to different standards. Here are some common classification methods:

Classify according to vibration principles and structural characteristics. Alarm clocks can be divided into two categories: mechanical and electronic. Mechanical alarm clock includes mechanical alarm clock, automatic, calendar, double calendar, spring and other mechanical watches; Electronic alarm clocks include swing electronic watches, tuning fork electronic watches, pointer and digital display quartz electronic watches, etc.

Classify according to purpose. Alarm clocks can be divided into daily mechanical alarm clocks, travel alarm clocks, solar alarm clocks, etc.

Classify according to shape. Alarm clocks come in various shapes, including circles, squares, polygons, etc.

Classify according to material. The materials of alarm clocks include rubber, plastic, metal, glass, etc.

Classify by brand and style. The main alarm clock brands in the market include Super Vibrant, Hershey Dahl, Disney Disney Disney Dahl, HELLOKITTY Dahl, etc. The styles include fashionable, retro, modern, fun, etc.

These classification methods help consumers choose the appropriate alarm clock based on their needs and preferences.