my mistake , I do not look on dimension of this clock before I buy it . it be bulky , would be very nice piece of equipment if would be much smaller . besides , use two battery aa , first set be go completely after one month , I be late to work because of that . second set I have already two month look forward to have another unexpected oversleeping -lrb- my last alarm clock be go on one battery 1 year -rrb-