Hubthtlot Big Bang Original Steel Manufacturer Reference # 301.PX.130.RX Case Size 42 mm diameter Case Material Yellow Gold Movement Automatic Water Resistance 100 meters Strap/Bracelet Material Rubber Item Number HUB0108930 Features Chronograph, Date, Power Reserve, Second Hand Collection Big Bang Gender Men's Case Shape: Round Crystal Sapphire Dial Color Black Dial Markers Arabic Movement Caliber HUB4100 Strap/Bracelet Strap Country of Origin Switzerland