Creative Flip Countdown: Equipped with a precise gravity sensor system, quickly start the countdown by flipping the timer and turning the corresponding time number face up, easy and interesting to operate. Preset times: 3,5,10,15,25,30min. Rechargeable battery: Built-in 500mAh rechargeable lithium battery, it can be used continuously for 10 hours after being fully charged, save 36 dry cells per year, making your life more economical and environmentally friendly. Multiple functions: The timer can be used not only for custom countdown but also for timing, the maximum display time is 99:59. Five levels of volume and mute mode meet all your needs, suitable for kitchen, gym, school, office, etc. Colorful LED Display: With LED high-definition electronic display, clear and easy to read, you can quickly check the time progress, battery power and volume, manage the time to every second. Comfortable and Portable: Made of electroplated ABS material, gives you a metal-like texture, prevents abrasion and scratches, and is more durable. It is light and small, very portable, weight: 0.012 lb, size: 1.77*1.61*1.85 inch. Fashionable and beautiful,it‘s a good gift for friends and family.