I am selling this watch because I stopped wearing watches in my pursuit of minimalism. There are no issues with the operation. I am a non-smoker. It's solar-powered, so you don't have to worry about it stopping, and it automatically adjusts the time, making it very easy to use. It has the toughness of a G-shock, but with a metal band, so it was useful and didn't look out of place even when paired with a suit. The wrist circumference is about 20cm. Accessories include the original box, case, instruction manual, and adjustment links. Please do not purchase if you are sensitive to used items. The following is a quote from the official website: From G-SHOCK, which continues to evolve in pursuit of toughness, comes a new G-STEEL model that opens up a new frontier in metal design through the fusion of different materials. The GST-B100D, which is the first in the series to feature an analog chronograph and is particular about texture and wearability, now has a new black and gold color scheme. To enhance the color of the dial, a light-shielding, light-dispersing solar panel with excellent power generation efficiency is used, and gold is used as an accent. Gold is used for the hour and minute hands, the in-dial, the indexes, and the front screws with IP treatment, giving off a brilliant shine. The combination of black, which symbolizes the brand color, and the gorgeous shine of gold creates a design that elevates the watch to a sophisticated face. The GST-B100D enables easy settings and automatic time correction through functional linkage with a smartphone via Bluetooth® communication. It is equipped with practical functions that pursue accurate time display as a watch. The new model, which incorporates a sharp stainless steel bezel and expands the variations of G-STEEL, has arrived with a gorgeous gold color, embodying a tough design. Smartphone link function (World time compatible with approximately 300 cities, alarm, timer, hand position correction, time exchange) Battery indicator display Mobile phone search Tough Solar Dual dial world time that can simultaneously display the time in two cities High-brightness LED light (Super Illuminator) Dial color...Silver Belt color...Silver Dial color...Black