Square Watch Men's Hollow Tourbillon Multi-function Mechanical Watch $ 45.31 Product Information: Dial Diameter: 43mm Thickness: 14mm Crown Type: Spiral Crown Table Bottom Type: Through the Bottom Mirror Material: Mineral Strengthened Glass Mirror Clasp Style: Pin Buckle Buckle Material: Stainless Steel Strap Material: Leather Dial Shape: Square Case Material: Alloy A: Rose shell with green face and brown skin B: White and brown skin of rose shell C: Silver shell, blue face and black skin D: Silver shell, white face and black skin E: Silver shell, black face and black skin F: Black shell green face brown skin G: Black shell, black face, black skin H: Rose shell black face black skin