Body Tone Wireless HR Monitors 20 Functions: * Continuous ECG acurate heart rate display * Unique soft and comfortable silk strap design * Auto fat burning zone program * Freely programable target zone and exercise time * 3 different audible alarms for safety and efficiency * Visual alarm for over maximum heart rate limit * Total time over low limit of target zone * Total time over high limit of target zone * Preset exercise time countdown for over low limit * Target zone re-settable and re-checkable * Changeable batteries * Age input re-settable * Auto power saving * Maximum HR record * 12/24 hour clock * Stopwatch function * EL backlight for vision in the dark * Weak battery detection * Current heart rate display * Cardio building program * 20 function wireless HR monitor * Continuous heart rate display * Soft, comfortable silk strap design * 12/24 hour clock * EL backlight * Stop watch function * Manufacturer"s warranty included (see product guarantee)