This TAG Heuer timepiece features square small seconds and chrono minutes at 3 o'clock and 9 o'clock as well as Monaco and TAG Heuer logos. The crown design is fateful to the original series. Luminescent hands and indexes are hand-applied and provide excellent visibility in the dark or underwater. A small date window appears at 6 o'clock. This watch has automatic chronograph movement. TAG Heuer Automatic chronographs make it possible to measure times of up to 12 hours with an accuracy of 1/8th of a second. They are all fitted with very high-frequency Swiss movements and represent one of the great achievements in the long watchmaking tradition and history of the company. The principal characteristics of TAG Heuer automatic chronographs are reliability, simplicity of use and a highly legible display. They have a number of useful functions for professional and leisure sporting activities, as well as for everyday use: simple time measurement and additional time measurement. It is water resistant to 100 meters; ensured by rigorous manufacturing standards and strict testing. Made with scratch resistant sapphire crystal, it has excellent durability as well as a sapphire crystal casebook which 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. 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.