ECB-800DC-1AJF Smartphone Link | This is a digital-analog combination model from the "EDIFICE" Smartphone Link series. In addition to the hands, it is a multi-functional model that displays various information on a highly visible STN LCD. By linking with a smartphone via Bluetooth, it displays the exact time to the second and has a world time function that allows you to easily select a city from approximately 300 cities. In addition, the target time indicator function indicates how many seconds are left until the racing car you are cheering for returns during a race. It also allows for 1/1000 second measurement and storage of 200 lap data. It is equipped with a high-brightness LED light that illuminates just by tilting your wrist, improving visibility at night. The bezel has a Black ion plate finish, making it scratch-resistant. (From the official page) Tough Solar (solar charging system) 10-bar water resistance This is a discontinued product. I purchased it used, but it was different from what I imagined, so I am selling it. There is a small scratch on the glass and a slight scratch on the metal band. I will also include an aftermarket inner rubber, outer leather strap (new) (purchased for about 3000 yen). It is a watch that is easier to use than radio waves, as you can connect to your smartphone via Bluetooth to set it up and automatically correct the time. There are many other functions, so please check the official page for details. CASIO G-SHOCK G-STEEL PRO TREK Digital-analog Digital Analog Quartz Radio wave Bluetooth Wristwatch Business Outdoor Motorsports TOM'S Color: Black