If you are a Nadal fan, maybe you should sit down. The watch he wore while winning his seventh Monte Carlo Championship, the Richard Mille RM027, will be put up at the 2011 Only Watch charity auction. While others are busy preparing their masterpieces, Richard Mille decided to put up a piece that will attract the required appeal. What is more unique is that this timepiece was a pre-production prototype model before officially launching 50 pieces. The watch also can float. The Only watch charity proceeds will benefit the Monegasque Association Against Muscular Dystrophy.