F5 Rotating Countdown Timer Magnetic Visual Kitchen Timer Student Learning Time Reminder - White ?[Accurate Timing] Precise countdown to the second for meticulous time management ?[Silent Timing] Quiet digital display design with no ticking sounds,perfect silent timing ?[Versatile Countdown/Countup] Supports both countdown and count-up modes,adjustable from 00-199 minutes and 0-59 seconds ?[Flexible Placement Options] Built-in stand for tabletop use,and magnetic backing for secure mounting on iron surfaces ?[Adjustable Volume] User-friendly Three-level volume adjustment to meet your different needs ?Specifications: ?Product size: 78*26.5mm ?Battery life: about 3 months ?Working temperature: 0??-50?? ?Volume: mute/maximum volume: 80-90DB/minimum volume: 60-78DB ?Working voltage: 4.5V (3 x AAA batteries) (not included) ?Time difference: ?��1s ?Time range: display minutes and seconds ?Maximum timing: minutes 00-199; seconds 00-59 ?Product material: ABS Package included: ?1 x Timer ?1 x English and Chinese User Manual