The ES-562U (12 hour)/ES-564U (24 hour) is a six digit Clock and a 100 Hour Up/Down Timer combined in one unit. The display and dual-function pushbutton controls are switchable between the Clock and Timer functions. The Clock and Timer are separate from each other and maintain their own memory. Dual-function Set/Stop, Select/Reset controls, along with Clock/Timer mode controls and Timer Up/Down momentary toggle switch are provided on the top of the case.