Produced by SJ .New BLS Product: Breitling BN5 Premier B01 Chronograph Watch, Same Model as Wu Yanzu .Material: 316L Stainless Steel .Diameter: 42 mm .Thickness: 13.65 mm .Crystal: Domed sapphire crystal with double-sided anti-reflective treatment .Case Back: Screw-in transparent sapphire .Crown: Original pin buckle .Movement: Asia-7750 movement .BLS product, the top choice for replicas! Exquisite recommendation for men's multifunctional mechanical watch S1, an exquisite recommendation for men's multifunctional mechanical watch.