1. This Work Timer allows you to select different volume reminders to suit different environments. Maximum (85-100 decibels) volume is for important reminders, so you 't miss a loud reminder even if you're in another room. Medium volume (65-80 decibels) is suitable for reading and will not disturb your thoughts. Silent mode (0dB) is suitable for study rooms or libraries, and will flash to remind you when the time is up without disturbing others. 2. This Productivity Timer features a 3inch LED digital mirror display that is easy to see at a glance. The constant light mode always shows the current timing status and lets you see the time remaining. If you select ECO mode, the screen will dim after 5 seconds, but will still be visible at close range. If there is no operation when the timer is not working, the display brightness will dim and then go off after a few seconds. 3. This Smart Timer has strong magnetic adsorption and non- pads on the back, which can be firmly stuck to the metal countertop to avoid falling off when cooking; there is also a foldable stand on the back for easy placement and viewing. 4. The digital magnetic timer applies precise electronic timing device, no need to press repeatedly mechanically but can adjust fastly and timing high effectively. Rotate to get your desired time from 00:00 to 99:55 (5s is an +/- unit), and press start button to timing. As a stopwatch the time span is the same. The knob of our for kids and elders is smaller than the outer ring and easier to operate. 5. This is a of electronic rotating timer for kids and whole family. whether for cooking baking, conference, exercise, fitness, work, study, lunch break, beauty, game and so on, the smart timer can help you to timing accurately, effective management of your precious time, help children to balance and learning. Power Suplly:3 x AAA batteries(Not included batteries) Colour:Silver & Black Material:Plastic Size:7.87x7.87x2.54 cm Package Contents: 1 * Timer 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.