D+ 1.Large digit display, time is clearly visible in the viewing angle of 45-60D+ 2.Time display with optional 12HR & 24D+ 3D+ 1D+ 2D+ 1D+ 2D+ 1D+ 2D+ 3D+ 4.If you only need 1 alarm set, then you will need set all 3D+ 1D+ 1D+ 1D+