This time, it is a model with a playful design that is unique to G-SHOCK, with a disc needle at 6 o'clock that shows the current function mode and remaining charge, and a front button with a rugged design. has been placed Furthermore, by laying out a round-shaped digital graphic at the 1-2 o'clock position, which is asymmetrical with the disc needle, it combines functionality and design with the digital liquid crystal at the 12 o'clock position. The GST-B300/B300S uses a soft urethane band with a hard design, and the GST-B300SD uses a stainless steel band with an impressive mirror and hairline finish. In addition to the stainless steel band, the GSTB300E includes a soft urethane band and a cross band, making it possible to enjoy replacement. Introducing a model that pursues the functional beauty of G-SHOCK G-STEEL. This is GST-B300SD-1AJF ・ Impact-resistant structure ・ Tough solar (solar charging system) ・ 20 ATM water resistant function ・ Mobile link function (function interlocking with compatible mobile phones via BluetoothR communication) ・ Needle retraction function (When the needle overlaps the liquid crystal display and is difficult to see, the needle can be temporarily retracted from the liquid crystal display) ・ World time: 39 cities around the world (39 time zones, with automatic summer time setting function) + UTC (Coordinated Universal Time) time display, home time city replacement function ・ Stopwatch (1/1000 second (less than 1 hour) / 1/10 second (more than 1 hour), 24 hour counter, with split) ・ Timer (set unit: 1 second, maximum set: 24 hours, measured in 1/10 second units) ・ 5 multi-alarms (DAILY, 1 TIME, SCHEDULE) ・Time signal ・ Battery indicator display ・ Power saving function (In a dark place, after a certain period of time, the display is turned off and the hand movement is stopped to save power.) ・ Full auto calendar ・ 12/24 hour display switching ・ Operation sound ON/OFF switching function ・ Double LED light: LED light for dial (with full auto light, super illuminator, afterglow function, afterglow time switch (1.5 sec/3 sec)), LED backlight for LCD (full auto light, super illuminator, Afterglow function, with afterglow time switching (1.5 seconds / 3 seconds)) ・Driving time without solar power generation after full charge: Approximately 6 months when using functions, Approximately 19 months when in power saving mode 15 seconds) works * GST-B300, GST-B300S, GST-B300SD, and GST-B300E are certified by the Radio Law of Japan.