Fangrui Product Details [easy To Use]: Preset Time 5/10/30/60 Minutes. Just Turn The Timer So The Numbered Side Is Facing Up And The Timer Start Immediately. Countdown And Timing Can Also Be Customized. Pause And Resume, Mute, Vibrate And Adjustable Alert Volume. [applicable Scenarios]: This Flip Timer Is Widely Used For Learning, Reading, Kitchen Cooking, Work, Meditation, Fitness Training, Yoga, Etc. It Is Very Suitable As An Time Management Gift For Children, Friends, And Family Members. [compact Rechargeable]: The Timer Measures 1.73x1.73x1.73 Inches, Fits In The Palm Of Your Hand, And Weighs Only 1.68 Ounces. Its Portable And Fits Into Any Pocket Or Bag. Its Rechargeable With A Lithium Battery And Usb-c Charging Port, Saving You The Extra Cost Of Buying Batteries And Taking A Step Towards The Environment [simple Design]: The Most Beautiful Tones, Cubic Design. Great For Home Decoration. Product Operating Instructions: Mode: Turn The Button To Mode Scroll 5-10-30-60 Minutes Upwards And The Countdown Start Automatic