An excellent Choice with powerful features and slim and elegant design.

The F4 lets you have further control over your work out and a more indepth knowledge of your activities and stamina. Suitable for all activites and fitness levels.

The main added features include Automatic Target zone and Calorie Count.

The Automatic Target zone feature helps keep you in your Target Zone and every exercise in your Zone puts you one step closer to your goal.

The Polar OwnCal feature shows your energy expenditure during exercise as well as your accumulated kilocalories to date. OwnCal calculation (in Polar M-series Heart Rate Monitors) takes gender, body weight and exercise heart rate into account. OwnCal_s calculation (in Polar S-series Heart Rate Monitors) takes VO_2max, HR_max and exercise heart rate into account.

You can set daily and weekly exercise goals in terms of calorie expenditure with the OwnCal feature, and then monitor the accumulated amount of calories expended during one week or during a single exercise session.

Futher Features of the F4 include:

• Complete heart rate
• Time of day
• Target zone
• Backlight
• Coded Heart Rate

An Excellent Choice!