ProCon3 is an innovative hand-held device for determining the fertile phase of a woman's menstrual cycle. An integrated mini computer delivers a precise 24h forecast based on data entry using three recognized test methods (base temperature, periodic input and salivary ferning). It is ideal for natural family planning (NFP), as an alternative to other contraceptive methods, i.e. the pill or a diaphragm, but ProCon3 can also be used to determine the ideal point of conception. With its user friendly Interface ProCon3 is very easy and safe to use. An integrated clock with alarm function, a choice of different languages and a key lock are included. The clear ellipse form of the product conceals the different components such as the thermometer and the optical unit safely, while being functional and of high quality. The unique design gives ProCon3 its own personality and lifts it out of the usual neutral and sometimes mundane medical device products.