Citizen celebrates the 20th anniversary of its professional-quality Aqualand diving watch with this special analog/digital Eco-Drive edition, which features a backlight and dive log memory. It offers water resistance to 200 meters (660 feet), suitable for scuba diving. And it's powered by Citizen's exclusive Eco-Drive technology, which charges the battery from both indoor and outdoor light. This model sports a high-tech look with a sleek asymmetrical case and coded buttons for the ultimate in form and function. It has a wealth of dive measurement functions, including: One of the world's largest watch makers, the Citizen Watch Company was founded in 1924 in Japan from its beginnings as the Shokosha Watch Research Institute. The first watch released by the company was named "CITIZEN" and its name was selected so that it would be "close to the hearts of people everywhere." Today, Citizen is recognized as a worldwide leader in advanced timepiece technology, from the world's slimmest LCD watch to the first voice recognition watch to the world's first professional dive watch with an electronic depth sensor. Citizen was also the first to sell watches made with titanium in the world, which is not only light and durable but also non-allergenic (as stainless steel can be to some wearers). Most recently, Citizen has released watches powered by its Eco-Drive, which runs continuously in any kind of natural light or artificial light for a lifetime of use without changing a battery.