Folding clasp with security system to prevent accidental opening. Crown design is faithful to original series. Monaco and TAG Heuer logos. Automatic movement. Luminescent and and indexes are hand-applied and provide excellent visibility in the dark or underwater. Square small seconds dial at 6 o'clock. Date window at 3 o'clock. Scratch resistant sapphire crystal for excellent durability. All TAG Heuer watches are fitted with sapphire crystal. This is cut from a polished slice of solid sapphire that has been created by the fusion and crystallization of alumina. Sapphire is so hard that only a diamond can scratch it. Water resistant to 50 meters; ensured by rigorous manufacturing standards and strict testing. The high level of TAG Heuer quality is founded on the rigorous choice and continuous monitoring of all its suppliers and their products. Throughout the manufacturing process, each component is subjected to numerous tests and controls designed to verify how carefully it has been made.