SEIKO SELECTION SBTM321 Date Blue 10 ATM Water Stainless [Seiko Watch] Japanese-made Men's Wristwatch, Solar-powered, Radio-controlled, Calendar,

Includes original packaging box and warranty. Radio wave correction function (receives standard radio waves from Japan, China, the United States, Germany, and the United Kingdom) Fully automatic calendar function (until December 31, 2099) Overcharge prevention function Approximately 9 months of operation on a full charge; approximately 2 years in power-saving mode.