Watches that just tell the time are so boring, so what extra functionality can you add to your wrist watch to make it that much more useful. You guessed it, a fertility meter.

The OV-Watch is a medical device worn on the wrist just like a watch and it tracks fertility with much higher accuracy than traditional methods. Many couples don’t realize that a woman’s window of fertility actually opens 4 days before ovulation. With OV-Watch women can actually track the full 6-day fertility window as opposed to a mere 2 day prediction with traditional methods.

It looks like a digital wristwatch and it has a sensor that tracks the differences in salt levels to accurately predict when you should do “it”.

This fertility gadget could come in real handy for couples planning on trying for a baby (remember practice makes perfect), or for those who run a mile when babies are mentioned (though a pronto condom would be a bit safer in that case).