I am selling this watch because I bought it but haven't used it. The following is quoted from the official website: This is a color theme model designed with the night drive scene in mind. It features a gradient from a deep blue on the upper half to gold on the lower half. This represents the night sky and the lights of the highway below. It evokes the Speed & Intelligence under the night sky. It is equipped with Bluetooth and Tough Solar. It connects to a smartphone app for automatic time correction, world time, smartphone transfer of stopwatch measurement data, and phone finder functions. Solar power generates electricity even from faint light sources like fluorescent lamps. Release Date: March 2024 Price: Manufacturer's suggested retail price: ¥36,300 (including tax) Case size (height × width × thickness): icon-question 51 × 47.8 × 10.8 mm Weight: icon-question 66 g Case/Bezel Material: Carbon / Stainless Steel Band: Resin band Water resistance: 10-bar water resistance Time adjustment: Bluetooth: Automatically corrects the time by connecting to a smartphone Power supply/Battery life: Tough Solar (solar charging system)