Polar Equine H7 Heart Rate Electrode Base Set Easy-to-use wireless heart rate sensor measures your horse's heart rate during training using Bluetooth Smart technology Ideal for measuring heart rate for longer periods when trotting and longeing Includes H7 Bluetooth Smart sensor and adjustable fabric belt Analyze your training details on Polar Beat and other compatible mobile training apps Compatible with the equine V800 and mobile training apps Easy-to-use wireless heart rate sensor measures your horse's heart rate during training using Bluetooth Smart technology Ideal for measuring heart rate for longer periods when trotting and longing Includes H7 Bluetooth Smart sensor and adjustable fabric belt Analyze your training details on Polar Beat and other compatible mobile training apps Compatible with the equine V800 and mobile training apps