Body Sculpture Heart Rate Monitor

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I recently picked up a Body Sculpture Heart Rate Monitor as I've been thinking about getting a HR Monitor for awhile and this was half price in the sales. So I've used it and it seems to track my heart beat and gives me my average which is great, but I cannot get the thing to reset the data between exercises, it just accumulates. Does anyone else have one of these monitors and is there a trick to the reset or did I get a faulty watch? If anyone can help I'd be grateful as if it is faulty it is going back.