1Wide Application: This wind up timer has a wide range of applications and can be used for a variety of chemical, color, cosmetic, tanning processing, children's activities, meetings, and a variety of other situations. 2Small And Lightweight: This wind up timer is small in size and light in weight, which is very convenient to carry for outing sports, and it doesn't take up much space to use it for cooking in the kitchen. 3Easy To Operate: This wind up timer is very easy to operate, if you want to set up to one hour, turn it clockwise to 55 minutes and then counterclockwise to the desired number of minutes, and if you want to set up to a shorter time, turn the timer for more than 30 seconds and then return to the desired time. 4No Battery Required: This wind up timer does not require batteries, there are no power hassles, you can use it anytime and anywhere. 5Multiple Functions: This wind up timer has a maximum setting time of 60 minutes, you can use it to set exercise time, cooking time management or other activities that need to be timed.