this be a great little clock for the price - love that it show time-zone , day , date & time -lrb- in 12 or 24 hr format -rrb- , temperature , daylight savings , and have a light button for nighttime . also have a solar panel for back-up battery power - the main feature I choose this clock for ! after Hurricane Irene , I realize how important it be to have battery or solar power appliance . my only two complaint be that the alarm be not very loud and would not wake a deep sleeper , and my unit do not seem to sync up with the atomic clock in Denver , CO - the product instruction indicate that it will do so in a matter of minute and set the time , day , date , time zone , etc. . I have to manually set all these feature .