Review on Track Your Ovulation Naturally With IProven'S High Precision Digital Basal Body Thermometer by Brian Elliott

Just push the button and place it under your tongue until it beeps, you're done.Pro's:Simple to use.

Just push the button and it will beep, then place it under your tongue for about 30 seconds until it beeps again.Accurate enough, although it always reads my temp about 1 degree low.Con'sSlightly hard to read and you'll need to hold it at an angle to reduce the glare.You'll need to use a few times to determine if needs to have a bias added or subtracted to make it accurate. Mine reads in the mid 97's instead of 98.6 as my normal body temp.