The Wahoo Fitness Tickr is a high quality heart rate monitor sensor and strap. Because it sends both a Bluetooth and ANT+ signal, it is compatible with ANT+ devices like Garmin Edge and wearable units as well as Bluetooth apps on a smartphone. The wide and flat strap is comfortable and completely adjustable from each side so you can center it on your body. The electronic module features two LEDs that show a visible connection and heart beat. The module can be unsnapped so you can wash the elastic strap. We find the Tickr more reliable that other heart rate monitors and a great replacement for touchy or poorly functioning units.