The Mai Seiko alarm clock is inspired by a Seiko watch design; Quartz crystal movement allows for the most accurate time keeping The LED flashing when the alarm rings will wake up the sleepiest person; also has snooze function Quiet sweep second hand so no annoying ticking sound; LumiBrite hour markers and hand accents make this clock easy to read in the dark Powered by 1 AA battery (included); backed by a manufacturer's 1 year warranty Overall dimensions: 3.74H x 3.70L x 1.97W inches