Features and Benefits Dual Line Display--Allows you to view two different readings at the same time. Target Zone Indicator --Indicates when you are above, below, or within your <em>heart</em> <em>rate</em> target range. <em>Heart</em> <em>Rates</em>--Records average and/or maximum <em>heart</em> <em>rate</em> for workout. Target Zone : Out-of-Zone Alarm--Provides you with an audible and visual out-of-zone alarm to alert you. Calories Burned--Measures the number of calories you use during your workout. <em>Polar</em> OwnZone(r)--During your warm-up,