It’s easy to check how your heart is doing on the run and bike, but on the swim? Thanks to Finis, they’ve created the Aquapulse Heart Monitor that will verbally announce your heart rate while in the water. You don’t have to wear a strap around your chest, stop to check your watch and there aren’t any ear buds to fuss with. Attach the unit to goggles and a soft rubber clip goes on the earlobe. The infrared sensor picks up heart rate through your earlobe and data is announced to you every 10 secs, 20secs, 30secs, 45secs, 1min, 2mins or 5mins via Bone Conduction technology. It should last anywhere from five to eight hours and is easily recharged by plugging it into a USB port. Obviously waterproof.