Cartier Tank Must Large Diamond Set Leather Strap Watch W4TA0017. Stainless steel 33.7mm x 25.5mm case and diamond set bezel set with 42 brilliant-cut diamonds (~0.48ct) all on a black brushed calfskin strap. This ladies watch Features a silvered dial with blued steel hands and black roman numerals. Water resistant up to 30m and sapphire crystal glass. Quartz movement.