Case diameter (excluding crown): 39mm Lug-to-lug length: 45.5mm Case thickness: 13.5mm Lug width / strap width: 20mm Crystal material: Sapphire (anti-scratch) Case material: 904L stainless steel Movement: NH35 automatic movement (Seiko/TMI) Accuracy: Approximately ±10 to ±20 seconds per day depending on wearing conditions. Water resistance: 20 ATM (with guide) Lume: Green Luminova Crown type: screw-down crown Caseback: Steel (closed back) Strap material: Stainless steel Weight: 150g Warranty: 2 years (movement)