Both instruments have been given a good going over by Rolex to make sure they'll withstand the vibrations during the two runs, and the dramatic changes in temperature deserts are known for. They also have their own power sources so they're good for backup

Both instruments have been given a good going over by Rolex to make sure they'll withstand the vibrations during the two runs, and the dramatic changes in temperature deserts are known for. They also have their own power sources so they're good for backup in case onboard computerised systems fail.

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