Battery: This Clock requires 3 x AA batteries to operate however this is NOT INCLUDED. Luminous tipped hands + iconic yellow second hand. Quiet precision quartz movement (new generation). Continuous backlight function illuminates the dial when in a low-light environment. The unobtrusive backlight means the time can easily be read at night. This feature can be disabled. Crescendo beep alarm - The beep alarm gets more frequent and louder if you do not turn it off. Snooze / backlight function (Snooze interval is 5 minutes / Backlight illuminates for 5 seconds once manually activated).