Model number: 310.30.40.50.06.001, Equipped with Omega Co-Axial Caliber 3861, Manual mechanical movement, high-quality stainless steel material, Luminous stick hour markers, chronograph / anti-magnetic / folding clasp, Crystal is a combination of acrylic and sapphire glass, Bezel is made of black ceramic, Case back is polished stainless steel, Bracelet is a “flat link” style.