HUBLOT Big Bang Unico Titanium 421.NX.1170.RX Matte black skeleton WATCH 697969
HUBLOT 421. Dial ColorMatte black skeleton. Bracelet【belt】rubber / black. Windproof MaterialSapphire Crystal Glass. Dial：It's not very noticeable, but there's a slight stain around the 43-second mark on the flange.