The only test to typically identify 4 or more fertile days � at least 2x any other ovulation test*. Accurately tracks your personal levels of 2 key fertility hormones. Identifies additional high fertility days that no other test can so you have more opportunities to get pregnant. Clear results the unique Clearblue �smiley face� appears on your fertile days. Can adjust every time you test according to your unique hormone profile. Over 99% accurate at detecting the LH surge. Easy to use vs strips - in a UK study 7/10 women found �strips� were not �easy to use� (111 women using and reading different test types). Reusable reader and 10 Clearblue ovulation test sticks included. Over 99% accurate at detecting pregnancy from the day of your expected period. Use up to 4 days before the expected period. Easy to read digital results in words and numbers. Displays unmistakably clear results in words and numbers. No 1 Doctor recommended brand*.*No 1 brand most recommened in a survey of 401 doctors (2012).