An artfully designed hardened mineral crystal creates a unique prism effect creating a bluish hue depending on the lighting. Inside is a skeletonized Miyota 8N24 automatic (self-winding) movement with striking blue hands. Silvertone numbers appear to float in the crystal. The movement is viewable via an exhibition case back which shows the rotor in action. The polished, stainless steel bracelet comes with a pushbutton dual deployant clasp for easy on/off. Case: Polished stainless steel, 42mm. Band: Stainless steel bracelet with push button (butterfly-style), deployant closure. Water Resistant: 30 meters. Warranty: 2 Years.