Rotary timer: digital timer is quick easy to adjust a time only by twisting outer ring, and one touch button to just start/stop time countdown countup (timing range 0-99 minutes) Multiple scenes use:designed for kitchen,classroom,fitness,meeting and more, to grow children’s awareness of time, reminding kids to balance games and learning,whether we are elderly or kids, this rotate timer, we can easily control and use it 3 volume settings: 3 levels of volume reminder to adapt to different environments. Work can be done in silent mode, noisy environments can be done in high frequency mode, Rotate to set timing, fast modulation in minutes, slow modulation in seconds Strong Magnetic Back: Powerful magnetic backing for easy use. This magnetic kitchen timer can securely attach to metal surfaces such as ovens, refrigerators, or whiteboards. You can set or adjust the time directly with one hand without removing the timer rechargeable:With Type-C charging, building 800mAh rechargeable battery offers at least a month's battery life on a single charge