Becker travel clocks. Ursell's, 3243 Q St. NW, $35 to $55. Open Monday through Saturday, 9:30 a.m. to 6 p.m.; Thursday until 9. 338-9200.

Theoretically vacations are occasions to forget time, to ignore schedules. In reality, you still have to catch planes and such, so you may wish you'd brought a travel alarm after all. Ursell's has one that is unassuming enough, being only two inches square and weighing only two ounces. It is accurate enough, with a quartz movement which is said to vary less than two seconds a month. Made of high-impact plastic, it fits into a neat little case. The alarm buzzer is quite soft, so you might want to set the clock on something resonant if you are a deep sleeper, but it buzzes for four seconds every half-minute for a half an hour. The clock has a one-year guarantee, and the company charges $6 for any repair after that. It comes in several models ranging from $35 to $55, but the cheapest one has the advantage of a visible movement which could help you pass an insomniac night.

Becker travel clocks. Ursell's 3243 Q. St. NW, $35 to $55. Open Monday through Saturday, 9:30 a.m. to 6 p.m.; Thursday until 9. 338-9200.