I have have this clock for just a couple of day but I be extremely impressed . I place it on the dresser in my bedroom and it be easily readable . I have have projection clock and these end up in the trash over time because the projection fade or become fuzzy - and I have have several - but this new clock without projection be the cat 's meow ! I feel that I need to see the time when I awake in the night and this clock have not disappointed I - the number be huge , clear and just perfect . the battery backup take a 9 volt and it be easily install . the packaging be not too much -lrb- I hate those form fitting one you have to slice you finger up to open -rrb- - this packaging be clear plastic but pop right off . needless to say I be very pleased and highly recommend this clock .