Magnified date window at 9 o'clock. Water resistant to 500 meters: a proof of ultimate resistance; ensured by rigorous manufacturing standards and strict testing. Automatic movement. Six large studs on bezel allow for easy manipulation with diving loves. Double security clasp bracelet with easy to use push buttons. Luminescent hands and indexes are hand-applied ad provide excellent visibility in the dark or underwater. Scratch resistant sapphire crystal for excellent durability and sapphire crystal casebook reveals TAG Heuer calibre in action. 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. Oversize screw-in crown with double gaskets. Unidirectional turning bezel measures time limits and is an essential safety feature. Any accidental movement of the bezel can only reduce the indicated remaining time. Automatic helium escape valve. 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.