We’ve written about a number of cool gadgets in the form of wrist watches, and the OV-Watch is a unique addition to the list. The OV-Watch is a fertility prediction gadget that can be worn on the wrist to predict what days are the most likely to become pregnant. This in turn let’s you know what days to have sex, or not have sex depending on what your goals are.

The OV-Watch senses the increase in amount of chloride ions on the skin of the wearer, indicating up to four days in advance when they are going to be fertile. Due to this method, simply putting on the watch would not immediately indicate fertility since it needs to establish a trend to identify the increased chloride.

This OV-Watch inherently has some advantages over other fertility detection methods since it doesn’t measure temperature or require a urine sample, and can also be re-used and shared with others. Plus, it will most likely quickly gain the approval of your geeky spouse due to it’s gadget-like appeal.

Source [OV Watch]