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gearEleven International: Shimano Dura-Ace Di2 7970 wireless Flight Deck Heart Rate Transmitter SC-7900
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gearEleven International: Shimano Dura-Ace Di2 7970 wireless Flight Deck Heart Rate Transmitter SC-7900
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gearEleven International: Shimano Dura-Ace Di2 7970 wireless Flight Deck Heart Rate Transmitter SC-7900
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