Hands down, the biggest, most powerful timer for teachers available. Mega means big. The jumbo LCD display with a brilliant blue backlight is so big and bright, you can read the display from the back seat of your classroom. Mega also means powerful. Powerful it is with all the standard timer features you would expect, plus many, many more. The MegaTimer's design is so unique and versatile, it is patent pending. Need dice, a spinner, or random numbers for math problems? The Random mode will generate random numbers for you. Set an Alarm to remind you and the class it's break time. Students seem a little sluggish? Press the Temperature button to check if the temperature is optimal for learning. And when you're not using the timer, display the Time and Date. Nowhere else will you find so many teaching tools packed into one digital timer. It's big. It's powerful. It's the MegaTimer! Details: Blue9.5" x 6.5"Students learn quickly that everyone has the potential to be selected for the timer.They are better able to manage their time while working and they learn to take turns. A Jumbo Timer Designed Just for Teachers! Large display so the whole class can see Timer can be used in lots of group activitiesRequires 6 AA batteries, (not included)