The Da Vinci SL is a -somewhat- sporty take on the Da Vinci. The case is a less ornate version of that of its more complicated brothers, with a W/R rating of a respectable 120 meters. The Da Vinci SL Chronograph is powered by Jaeger-LeCoultre's caliber 631 'MecaQuartz' movement.Reference IW3728-05 has a brushed stainless steel case and a black dial. It is fitted with a stainless steel bracelet.