Features: Larger NumbersThe 4.5"" LED digital display has large 2.1"" tall numbers， can be read easily. Alarm Clock Battery OperatedThis basic alarm clock is powered by 3 xAAA batteries (not included)， which can keep Constantly Big 4.5'' LED digit time display for more than 12 months. Battery operated (no cords) allows it to be used anywhere you need a clock Smart Nightlight The small clock features a night light and can be to choose three dimmers for LOW - HIGH - OFF as desired. Extra Alarm Clock This alarm clock has a gradually faster beep noise which continues for 90 seconds. Before the alarm stops itself， top snooze button can be continually to get an extra 8-minute nap.It doesn’t matter how much of a heavy sleeper you are. Regular FeaturesIncludes snooze time (5 minutes)， 12/24 hour time format， calendar， and Indoor Temperature(degreeC or degreeF). Product Description:  Display screen:LCD  Product material:ABS  Power supply :3 No. 7 batteries (not included)  Product size:139 * 77 * 46mm  Product accessories:instruction manual Product gross weight:157g  Color box volume:52 * 86 * 147mm  packect included:  1xalarm clock  1xuser manual