Tested with one AA battery (2 small screws take off the back plate). Works as it should. Beautiful on a shelf or next to your bed. Heavy. Will be well packed and shipped with tracking. This Pottery Barn alarm clock features a stunning retro Art Deco style with a brushed nickel finish. The clock is battery-powered and has luminous hands that are easy to read. It also has an alarm feature and protective feet to keep it safe from scratches.