Seiko Prospex 43MM Speedtimer Mechanical Chronograph Watch in Blue. Stainless steel case with super hard coating. Crocodile bracelet strap. Dual-curved sapphire crystal with anti-reflective coating on the inner surface. Automatic with manual winding capability. Vibrant blue dial with LumniBrite hands and markers. Screw-down see-through case back. Tri-fold push button release clasp. Water resistance 100meters.