The Frederique Constant Classics Quartz GMT combines a classic dress aesthetic with a GMT complication for tracking a second time zone. Its 40 mm stainless steel case and sapphire crystal make it suitable for everyday wear and travel. Key attributes: Silver | Brown | Steel | 5 ATM water resistance | Sapphire crystal | Quartz movement | GMT function | Leather strap | Steel clasp | Silver dial | Classic dress design | Dimensions & fit: Case diameter: 40 mm | Composition & care: Case: Steel | Dial: Silver | Crystal: Sapphire | Strap: Leather | Clasp: Steel | Movement: Quartz | Wipe case and crystal with a soft, lint-free cloth. Avoid prolonged exposure of the leather strap to water. Have battery replacement and water-resistance seals serviced by an authorized service center.