The Hydra Alert HRM incorporates a heart rate monitor on top of the stellar functions of the Hydra Alert Jr. Monitoring heart rate during exercise ensures effective training again and again. Hydra Alert HRM utilizes 2.4 GHz ANT+ Sport wireless technology to eliminate crosstalk with other wireless devices and ensure the most accurate readings. The conductive fabric chest belt remains comfortably in place even during the most extreme workout. Conveniently, the fabric chest belt is also machine washable.

Hydra Alert Jr. has the most essential features with Fluid Check , Heat Index and a stopwatch. This is an ideal watch for monitoring the rate of dehydration during any physical activity.