The only time we're monitoring our heart rate is when we're on the treadmill. That said, we're not really sure of the usefulness of this mouse. The Vito W1 from ASUSTeK is a wireless laser computer mouse that measures your heart rate and displays it on your screen.
The product description says that the mouse is designed to help you keep track of your heart rate "during daily computing," so maybe it's a device designed for those with very strenuous desk jobs.
If you're constantly checking email and worried that the next message might have news that'll put you into cardiac arrest, then you should already be clicking the "Add to Cart" button. The rest of us might just want to pass on this one and instead check out these other mouse options worth spending your hard-earned money on: