An apparatus for displaying a fitness exercise condition is provided. A user (that is, an exerciser) of the apparatus inputs personal basic information on the exerciser. When the apparatus is applied to an arm or wrist of the exerciser and the exerciser carries out fitness exercise, a heart rate is measured during the fitness exercise to record it. Load data indicating hardness of the fitness exercise is calculated on the basis of the personal basic information thus inputted and data on the recorded heart rate. A display section is caused to display notice with a color according to a load on the exerciser for each of predetermined time periods on the basis of the calculated load data. The display section may include first and second display sub sections for displaying first and second notice with first and second colors, respectively.