Our Alarm Clock can protect you from radiation and all you need is an AA battery to go Environment Life.(not included) Black Large Arabic numeral moment,easy to recognize time.Press the black button on the back,a soft backlight is convenient to watch the time late at night.Loosen it and goes out,save electricity eye. This alarm clock is perfect decoration for bedrooms, desks, travel and offices, etc. Also a great gift for your family and friends Since our products are rigorously tested and made with love, we believe in the of our products. if you have any questions about alarm clock, please contact us and we will help you. The alarm clock is fitted with a high-precision quartz movement, ensuring accurate timekeeping and virtually silent operation—no ticking sound.