Precisionist Champlain Chronograph powered by Bulova’s proprietary Precisionist eight hand quartz chronograph movement with a 262kHz vibrational frequency—eight times greater than standard timepieces—for unparalleled accuracy. Stainless steel and gray IP screw back case with screw down crown black carbon fiber chronograph dial with date feature curved mineral crystal stainless steel bracelet with fold over buckle closure safety bar and extender and 300 meter water resistance. Diameter: 46mm Thickness: 17. 5mm.