exeptionally readable digit , easily see across the room even with poor eyesight . gigantic snooze button that can not be confuse with another button . two-position display brightness : very bright or moderately dim . the perfect alarm clock . warning : I be refer to Equity 's previous model 30037 that have better control , include a dimmer switch ; it use a 9v backup battery . the current model 30037 have poorer control and no dimmer switch ; it use a 1.5 v backup battery .