The case measures 39.5mm by 13.5mm (with a large double-domed crystal making up 2.5mm of that height) and has a 47mm lug-to-lug with 20mm lug width. It's a link pretty normal measurement range for a modern recreation of a classic design. Inside, there's a Sellita SW510-M manually-wound cam-style chronograph link movement with a hacking running seconds at 9 link o'clock, 30 30-minute counter at 3 o'clock, and a 12-hour counter at 6 o'clock. The watch runs at 28,800 vph with a 63-hour power reserve. link