There are three major categories of wall clocks: 1. Analog quartz wall clock. 2. Mechanical wall clock 3. Digital wall clock. Wall clocks in some halls and rooms are necessary, especially in integrated offices. Category: BlogsBy wyf6959163082022-02-11 Author: wyf695916308 Post navigationPreviousPrevious post:Mechanical Principles of Wall ClocksNextNext post:How many years can the wall clock be used?Related PostsWhy wall clocks are not suitable for rechargeable batteries2022-05-21Why does the wall clock go slower and slower2022-05-11How the electronic clock works2022-04-30How to adjust the electronic clock ABCD2022-04-21What is the difference between an electronic clock and a quartz clock?2022-04-11Features and functions of alarm clocks2022-03-31