Why do you choose our kitchen cooking timer？ Mini size,lighter and thinner,easy to master and carry.High definition and durable LCD screen,resistant to pressure and falling,not easy to damage.The strong magnetic suction on the back is firmly fixed on the metal,which is not easy to drop.Digital display timer helps you manage time reasonably,reduce procrastination, and make you more efficient every day.The sound is mute during count up or down the time and will ring the bell at the preset time, making your study and work more focused. SPECIFICATIONS Maximum Time: 99 minutes,59 secondsMaterial:ABS+LCD+PCB+MAGNETColor:Red,Black,Green,YellowButton:"MIN";"SEC";"START"and "STOP"Product Dimensions:7 x 5.3 cm/2.8 x 2.1 inDisplay Dimensions:4 x 2.7 cm/ 1.57 x 1.06 in PACKAGE INCLUDING 4 x Magnetic Stopwatch Timer4 x Button Batteries HOW TO USE Lightly press the "START" button to start positive counting,and then press the "STOP" button to stop count Press "MIN" and "SEC" at the same time to reset the timingPress the "MIN" button gently to set the timing of the minute period, and then press the "START" button to start the countdown of the preset time. Long press the "MIN" button to start the long time timing preselection HOW TO USE Lightly press the "START" button to start positive counting,and then press the "STOP" button to stop count Press "MIN" and "SEC" at the same time to reset the timingPress the "MIN" button gently to set the timing of the minute period, and then press the "START" button to start the countdown of the preset time. Long press the "MIN" button to start the long time timing preselection WIDELY APPLICATION NOTE Due to manual measurement,the size and weight may have a certain errorDueto the difference between different monitors,there may be a slight color difference existed.