Pricing mentioned is for EA. Requires a minimum buy of 1 piece. Depth = 1 5/8 in ; Display Type = LCD ; Gas Type = Oxygen ; Height = 3 7/16 in ; Power Source = Lithium Battery ; Run Time = 2 Years ; Sensor Type = Surecell ; Sound Level = 95 dBA ; Temp. Range = 122degree F ; Temp. Range = -40degree F ; Width = 2 in ; Weight = 3.2 ounce ;