IWC IW3707-13 : GST Chronograph Automatic Stainless Steel 。Brand IWC SCHAFFHAUSEN Model GST chronograph Gender Men\'s Material Stainless Steel / Stainless Steel Dial color Silver Movement Automatic Ref Number IW370713 Serial Number 2925*** Functions Day date、Chronograph、Small seconds Accessories No accessories Case size About 40mm (1.6inch) (not including the crown) Wrist size About 19.5cm (7.7 inch) Lugs width 22mm(0.9 inch) Keeping time -17 sec/day(measured value)　※Reference value State of the wound Glass No damage Case a few scratch, small wound Bezel a few scratch, small wound Belt/Bracelet a few scratch Hand a Little damage, Stains Dial a few stain(index ) Buckle a few scratch CL Number 962520　 353 260604 YY Condition Rank Body rank AB Belt/Bracelet rank AB Condition RANK Explanation N [Mint] Item has never been used. S [Beautiful] Item is like new withvery slight signs of use. A [Excellent] Item has clearly been used,but has no significant scratches or wear. AB [Great] Item has slight surface scratches or slight wear,but looks great. B [Good] Item shows scratches or wear that is visible when worn on wrist. BC [Fair] Item is not in perfect working order or slightly damaged. C [Poor] Item cannot be used as-is.Repair needed or used as parts.