Here is a wearable device for the athletes among us. Mio Link is a continuous heart rate wristband that does not require a chest strap to track your readings. It connects to your favorite fitness apps and sport devices since it supports Bluetooth 4.0 and ANT+. It uses LED lights and an electro-optical cell to sense the volume of blood under your skin. Mio connects to your favorite gadgets wirelessly.
Mio LINK promises a high level of accuracy even while running and cycling at speeds of up to 14.4 mph. Mio LINK offers up to 5 customizable heart rate zones and shows you which zone you are in at any given moment.