About This Watch: This Mont Blanc Star 4810 Collection 102342 has an automatic winding movement. It features a silver guilloche dial, rhodium-plated regate and baton hands, luminescent hour and minute hands, and a scratch resistant sapphire crystal. Its finely crafted 41.50 mm case is made out of stainless steel. This watch is water resistant up to 30 meters; 100 feet; 3 atm.