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Polar F4 heart monitor

polar%20f4.JPGExercise is all well and good but wouldn't it be so much better if you knew exactly how well you were doing? The Polar F4 is styled like a digital wrist watch (it is one too); wear it whilst it tracks calorie expenditure and it also has a stop watch, heart touch, average/max heart rate and free webservice for data transfer. It's also water resistant up to 50m. Tesco's currently have a deal on where you'll save £10 bringing it in at £47.47

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