The Smart Lite SwingOut Travel Alarm Clock is an excellent addition to your carryon baggage An easytoread display features large liquid crystal digits with a backlight that shines all night so that you can read the time at a glance at any hour The alarm has an ascending tone to ensure you are woken up and a snooze button The batteries last more than six months The clock slides out of a hard protective casing which is not suited to engraving When standing open it measures 5 1/4 by 3/4 by 2 1/8 inches and reduces when closed to 3 by 3/4 by 2 1/8 inches