[How to use] - INSTRUCTIONS1. when you open the box default White leaf position is on time "0". 2.To start time rotate clockwise and set leaf position on 55. 3.Now you are ready to set your time by rotating counterclockwise. (For example for 15 min rotate CCW and set leaf position on 15.) 4.All set after 15 minute, timer will sound the Bell ring.. Notice: you must do step 2 to make the timer work.Timers are mechanical. No batteries needed. [CLOSEST AIDES] - When you are extremely busy in the kitchen, this Timer will remind you at any time.No longer have to worry about boiled water dried up and dishes burnt. [MULTI-USE] - Not only for kitchen, but also for study, family, life,home,increase study efficiency. [FEATURE] - Creative modelling.Calibration clear.Stable base.Variety shapes.Make you fall in love with this little timer,not boring anymore. [Buy With Confidence] - Just refer to the website video to see how to use it.100% customersatisfactionisourpursuit~Any problem just feel free to click "seller contact" button in your Amazon account to email us.We will reply you as soon as we can