Classic Hollowed-Out White: The first release of TW creates the strongest 1:1 top-tier replica of the Cartier Santos Hollow Series. Parameters are synchronized with the genuine product: Case diameter 39.8mm, Movement: Swiss Ronda 4S20 modified mechanical movement, Case thickness 9.08mm, Dial color: Hollowed-out, Dial shape: Square, SKU: Black, Silver with silver circle, Silver with rose gold circle, Silver with gold circle. Strap colors: Black, Blue, made of imported calfskin. Buckle type: Double folding clasp. Transparent case back: Yes. Glass: Sapphire crystal. Hands: Blue heat-treated steel hands, Black version with luminous features using imported green luminescence. Crown: Gem-set crown.