Wake up on time and stay on schedule with this jumbo atomic digital wall clock. Featuring a 4-inch time display with large, easy-to-read numbers, this atomic clock lets you choose between four time zones and automatically tells the exact time in 12- and 24-hour formats. This La Crosse Technology clock keeps you informed of the date and monitors and displays indoor temperatures. Atomic digital clock with silver plastic frame. Automatically Updates for Daylight Saving Time (On or Off Option).