Movement Japanese MIYOTA Quartz Movement. Hack mechanism. Case & Bracelet Highest quality stainless steel. Polished & Brushed Case & Buckle. Hardlex crystal glass. Size & Weight Weight: 116g. Case diameter: 40mm (Stem excluded). Thickness: 16mm. Lug width: 22mm. Functions *Chronograph 6 o'clock sub-dial : Perpetual Second hand. 9 o'clock sub-Dial : 30 Minutes Chronograph register. 12 o'clock sub-Dial : Date calendar. 2 o'clock sub-button : Starts & Stops Chronograph. 4 o'clock sub-button : Resets Chronograph.