KNOWHEN® Advanced Ovulation Test Kit is a USA clinically tested, reuseable, saliva-based ovulation test, which includes a FREE Personalized Fertility Monitoring App that tracks your unique ovulation cycle based on your actual test results. KNOWHEN® assists women in identifying their fertile cycle naturally and cost effectively. Reusable for 12 months or more. To test fertility, place a drop of saliva on mini-ovulation™ 60 X magnification microscope lens first thing in the morning, before brushing teeth, eating or drinking. Let it dry (within minutes) and view results inn eyepiece. The test is easy to clean with no mess. Includes a high quality mirofiber for wiping, a lipstick-like carrying case, Fertility Tester Diary card with the APP to register personal APP with instructions in English & Spanish. KNOWHEN® Advanced Ovulation Test Kit identifies 5 most fertile days Test is based on a woman's estrogen level and more accurate than strips KNOWHEN® test uses saliva and not messy urine strips It is clinically tested and 98.9% accurate It is discrete, convenient, reusable and less expensive than strips KNOWHEN® is FDA registered and includes FREE Fertility Monitoring App to track fertility Results in minutes Directions: Microscope, Carrying Case, Battery