Revue Thommen Airspeed Xlarge Pioneer Chronograph pairs a robust 43.5 mm stainless steel case with an ETA Valjoux 7750 automatic chronograph movement. Built for precise timing and everyday wear, it features a sapphire crystal and clear day‑date display. Key attributes: Silver | Blue | Gray | Stainless steel | Water resistance 10 ATM (10 Bar) | Sapphire crystal, double-sided anti-reflective | Swiss made | Power reserve approx. 38 hours | Chronograph measurement capacity: 12 h, 30 min, 59 s | Double-folding clasp with push mechanism | Rotating bezel | Day‑date calendar at 3h | Chronograph start‑stop‑reset | Chronograph subdials: small seconds at 9h, 30‑minute counter at 12h, 12‑hour counter at 6h | Tachymeter measurement | Round case | Blue dial with luminous coating | Blue luminous hands | Stainless steel bracelet | Tachymeter scale | Dimensions & fit: Case diameter 43.5 millimeter | Case height 15.6 millimeter | Bracelet width 24 millimeter | Composition & care: Stainless steel | Sapphire crystal