Assembled Product Length: 3.37" Assembled Product Height: 4.75" Assembled Product Width: 1.12" . 1-week programming One program for the entire week, 4 periods per day Digital display Accurate temperature control of +/-0.5°C for consistent comfort Save up 33% on energy costs (if used as directed) Permanent and temporary override capability Set point is retained in memory in the event of a power outage Celsius or Fahrenheit temperature display Battery change reminder Soft-touch keys Easy operation Easy to install