【Small Size】Size: 3.35" x 3.35" x 1.78". Small size fits perfectly as a desk /bedside / nightstand wake up clock . 【High-quality Materials】Fine finishing hard metal case provides this alarm clock with strong protection. - Transparent glass clock surface clearly shows time. - Square shape ensures safety when it stands on flat surface. - Exquisite color and concise design fits any decoration style. - Perfect decor for Desk/Bedroom/Bookshelf. 【Night Light】Press the light button on the back, you can light up the clock in the darkness. Small yellow light is friendly to protect your eye. 【Battery Operated】Powered by 1 "AA" Battery (not included ). The wireless design let it can be placed wherever you need. - You can install the alarm clock battery very easily by putting the positive terminal of the battery first and then pushing the negative terminal of the battery down.