This Swiss-made mens Hamilton Khaki ETO watch has a solid 42mm case in stainless steel, and a black dial with date feature and sapphire glass. The watch fastens with an orange leather strap. The ETO (Estimated Time Over) allows the user to calculate, using the slide rule bezel, while travelling, the speed, distance or time for a specific journey. The split second chronograph then allows you to measure current speed and estimate the amount of time over or under that is required to travel the distance by current speeds. This movement also features a quick set hour function, allowing you to change time zones quickly without changing the minutes.