Movement: NH34 movement [automatic mechanical movement] Case: Material-316L stainless steel Diameter 40.5mm (without crown) Length 48mm (including lugs) Thickness of about 13.8mm (including table mirror) Lugs width 20mm (including the inside of the strap) Watch mirror: sapphire crystal mirror Bezel: ceramic chronograph bezel, red and blue; red and black; blue and black all-night aperture Dial: pure black Hands: steel needle, filled with luminous Luminous: BGW-9 blue super luminous Crown: screw-in, diameter 7mm Bottom cover: screw-in bottom cover Strap: three-bead solid steel strap with a width of 20*16mm Clasp: solid folding clasp Waterproof: 200 meters waterproof