Travel Alarm Clock Black with Battery by Idea Two displays let you set time and alarm separately. Extremely intelligent design. Easy to use. You will love this travel alarm clock and want to use it for a daily alarm clock . Lightweight with button to turn on a light & snooze feature. 2.5" x 3.5" Originally discovered in a chic gift shop in Barcelona where it was a super popular item Battery Included in box but separate from clock. Easy to insert. Great desk clock too.