this clock be very good . its not too large , about the size of a grapefruit . some reviewer mention that they light face would not turn off . Mine work fine . you set the brightness of the light face with a wheel adjustment . Mine be completely off in the lowest setting . at the highest , it actually make a decent night light . it run off 3 `` aa '' battery , I be not sure of the life of these with the light face . I like to keep the face on mine dim , but still readable in the dark . the alarm work fine also . if you need a simple alarm clock , this one be great .