Meet Mio LINK: a continuous heart rate wristband that helps you take your athletic performance to the next level. It provides you with accurate heart rate data without a chest strap. The device is water resistant up to 30m. It has 5 heart rate zones and shows you which one you are in. You can connect it to your favorite fitness app with Bluetooth and ANT+.
How Mio LINK works sets it apart from other solutions on the market. This device uses LED lights and an electro-optical cell to sense the volume of blood under your skin. From there, it uses complex algorithms to detect your heart’s rhythm. The Mio LINK is accurate even when you are running and cycling at speeds of up to 14.4 mph. You can get it for under $100.