Works in both the NEW advanced Monitor and the OLD monitor.
Each box of Clearblue Fertility Monitor sticks has 20 Fertility Test Sticks and 4 Pregnancy Test Sticks.
For more information about the Advanced Clearblue Monitor please click here.
Advanced Clearblue Pregnancy Tests
PLEASE NOTE: The 4 advanced pregnancy tests included in with this pack do not work in the old fertility monitor. Inserting these test sticks into the monitor could cause the monitor to break.