This new AK-serial Richard Mille RM28 St Barth diver in titanium is 47mm . It is water resistant to 300M. With box and papers . This 100-piece special edition pays tribute to the international yacht race, “Les Voiles de St Barth,” that takes place in the Caribbean waters surrounding St Barth from April 6th to 11th, 2010. (With very nice limited number).