The sports bra that monitors your heart rate 23rd January 2009 Marks & Spencer's range of sports bras now includes the Heart Rate Monitor High Impact Sports Bra (£19.50). Available in black or white, it's a seam-free sports bra with an integrated pocket for a NuMetrix™ transmitter which picks up your heart rate from electrode sensor technology knitted into the bra's underband fabric. The transmitter then sends your heart rate data to a rather funky looking watch. Watch and transmitter sold separately (£39.50). return to the Bras.co.uk homepage

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