Check the listing for details. Digital Ovulation Tests - 50 Tests. Color: White, Condition: New. Listed at 59.00 USD. - Easy to use.- Clear digital results.- Interpretes the results for you.The digital ovulation tests are an innovative, fast, easy and accurate way to detect your 2 most fertile days of your cycle. If sexual intercourse is made within those days, you will increase your chances of getting pregnant.The unique detection technology helps you find your fertile days and get pregnant easily. It is a useful test which can predict your ovulation.The digital test gives an immediate and clear result marked "NO-" for hormone non-peak and "YES+" for hormone peak. The increase in LH precedes ovulation and activates it within 24-48 hours.After ovulation, the ovum can survive for about 12 hours after being released, while the sperm can survive for a few days inside the body.