Size and Design Case diameter: 40 mm Case thickness: Approximately 8.52 mm Material: 18K white gold. Dial color: Dark gray tending towards lead. Case shape: Octagonal with rounded edges. Glass: Scratch-resistant sapphire. Strap and Clasp Black leather strap, crocodile leather. White gold folding clasp. Transparent sapphire crystal case back revealing the mechanical movement. Movement and Functions Power reserve: 38 to 48 hours. Date display with hand. Moon phase indicator. Power reserve indicator. Small seconds indicator. Water resistance: 60 meters according to specifications Material: Stainless Steel Features: Water Resistant Movement Type: Automatic Watch Size: 40mm Brand: Patek Philippe