A travel clock often is a necessity when on the road. This Casio digital clock, which offers everything you need to rise at the appointed hour, includes a daily alarm, 12- and 24-hour time formats, and a snooze button. The clock also features an electroluminescent backlight with an afterglow that makes it easier to read. The device fits snugly inside a suitcase pocket or travel case and runs on two AAA batteries.