Lady-Comp is programmed with all available natural family planning research data and uses biomathematical forecasting calculations as well as the very latest computer techniques. Lady-Comp contains the first medical expertise to help provide safe, reliable and natural birth control. The fertile and infertile days can be determined without any bothersome or harmful interventions in the body's natural functions. Many women suffer from side-effects of the birth control pill. Lady-Comp offers Contraception without drugs or side-effects. Easy to Use-30 seconds/dayFirst of all the temperature is taken and then information about the menstrual dates is requested. This information is evaluated and is compared with a large database of cycles. Next, a diagnosis is made regarding the fertility of the next 24 hours (and the following six days). All you need to do is press one button a day and to take your temperature orally with the computers thermal sensor. The time required each day is only 30 seconds/day. Lady-Comp is not only a safe, reliable and natural birth control but also quick and easy to operate. Safe and reliable: 99.3 percent reliable Pearl-Index 0.7 Very reliable interpretation of even complicated cycles Disregards irregular temperature readings Makes up for missing temperature readings Fertility prognosis for the next 6 days Lady-Comp early pregnancy display after 15 daysFarenheit temprature.Lady-Comp can be upgraded to become Baby-Comp Lady-Comp is suitable for shift-workers Lady-Comp operates well with irregular schedules. Works with mains supply or battery Inexpensive: One time purchase Over 10 years life expectancy Very durable High quality Made in Germany No additional cost for test strips Free print-out and expert analysis of the cycle data Service: Telephone and E-mail supportFive year warrantyOptional Extended Five year warranty

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