10. 11. 2004
Baby-Comp and Lady-Comp Family Planners
The Lady-Comp and Baby-Comp are personal fertility calculators that monitor your cycle through body temperature. It's an ages old method, but the Lady Comp makes the interpretation simple by flashing red on days you're likely to conceive. There's also steady red (conception possible), yellow (don't know, use a condom) and green (have fun). A Lady Comp can be upgraded through software to a Baby Comp, probably just switching the flashing red light to a flashing green.
About $615 at Dita Health Shop.
From Cool Hunting.