The Clearblue Fertility Monitor is the most advanced method of maximizing your chances of getting pregnant. Most home ovulation tests identify the 2 Peak Fertility days during your cycle by detecting the surge in Luteinizing Hormone (LH) that triggers ovulation. The Clearblue Fertility Monitor is unique as it tracks 2 hormones to typically identify up to 6 fertile days ?it not only shows you your 2 Peak Fertility days, it can also inform most women of an extra 1-5 days of High Fertility prior to their Peak Fertility. Since your partner�s sperm can survive in your body for several days, having sex on all of these days can lead to conception. This starter kit not only contains the monitor but 30 individually wrapped monitor test sticks as well.