This is a Longines Conquest V.H.P. GMT Quartz Perpetual Calendar stainless steel L3.718.4 men's wristwatch. A key feature of this watch is its flash setting function. This allows you to set two time zones using a smartphone app and a flash. The sensor is located above the 1 at the 12 o'clock position. An image is included in the 10th photo. For detailed setup instructions, please search YouTube for "Longines User Guide - Conquest V.H.P. : Introduction". V.H.P. stands for Very High Precision. This watch boasts an accuracy of ±5 seconds per year. There are minor scratches overall, but they are not noticeable. The sapphire crystal glass has no scratches. The dial color is white and has no stains. It is running correctly. Width: Approximately 41mm (excluding the crown), Thickness: Approximately 13mm, Weight: Approximately 150g Wrist size: Currently about 17cm. There are 3 spare links (and 3 pins), allowing for an extension of about 3cm. Accessories: Box, warranty, booklet, links Retail price: 214,500 yen (tax included)