Buy Ekho Heart Rate Monitors as a class pack and save! Ekho Heart Rate Monitor Class Packs include 30 E-15 heart rate monitors, 30 transmitters, 60 elastic straps and an aluminum case. Checking out your heart rate is easy and affordable with this EKHO E-15 heart rate monitor wristwatch. It's simple to use so you can focus on your workouts instead of worrying about complicated multi-functions.The Ekho E-15 Heart Rate Monitor is a multi-function heart rate monitor and also calculates the amount of calories you have burned. Other features include current heart rate, average heart rate, target zone programming, audible and visual alarm for high/low target zone, out-of-zone visual display, time of day and stopwatch function.