Cartier Tank Quadrilateral Hollow Series TW Exclusive Launch - The Ultimate 1:1 Replica. Specifications synchronized with the authentic piece: Case Diameter: 47.15 x 26.2 mm; Movement: Swiss Ronda 4S20 Modified Mechanical Movement; Case Thickness: 7.82 mm; Dial Color: Hollow; Dial Shape: Quadrilateral; SKU: Silver with Silver Circle, Silver Inlaid Stones; Strap Color: Gray-Blue Coffee Imported Small; Buckle Type: Classic Pin Buckle; Case Back: Transparent Back; Mirror: Sapphire Crystal; Hands: Blue Burnished Steel Hands; Crown: Gem-Set Crown.