[Product Information] Brand: G-SHOCK Materials: glass [Product Description] ・Introducing the Urban utility series from G-SHOCK, a toughness watch that has continued to evolve in pursuit of insatiable strength since its release in 1983, in popular colors such as blue-gray and olive green. - [Shockproof structure & 20 ATM water resistant] Adopts a shockproof structure that is resistant to shock and vibration. It is also equipped with 20 ATM water resistance, allowing it to be used in a variety of locations and situations. ・[Tough Solar] Casio's unique solar charging system that stably operates various functions that are subject to heavy loads by combining a solar panel that generates electricity even with a small amount of light and a large-capacity secondary battery. ・[Mobile link function] Functions can be linked with compatible smartphones via BluetoothⓇ communication. ・[Other product specifications] Please check the explanation column. explanation From the G-SHOCK toughness watch, which has continued to evolve in pursuit of insatiable strength since its release in 1983, this Urban utility series features popular colors such as blue-gray and olive green. The urban style that incorporates outdoor tastes such as gorp core is expressed in G-SHOCK's typical design and colors that are practical and easy to match with street fashion. The base models are the iconic 5600 series and 2100 series, with low tone colors and layered bezels for a stylish look. The GA-B2100 uses a two-color molded bezel for the first time, and the design evolves through color combinations. ●Shock-resistant structure ●Tough solar (solar charging system) ●20 ATM waterproof function ●Mobile link function (function linked via Bluetooth® communication with compatible mobile phones) ●Hand retraction function (If the hands overlap the LCD display and are difficult to see, you can temporarily retract the hands from above the LCD display.) ●World Time: 38 cities around the world (38 time zones, automatic daylight saving time setting function included) + UTC (Coordinated Universal Time) time display, home time city switching function ●Stopwatch (1/100 second (less than 1 hour)/1 second (more than 1 hour), 24 hour meter, with lap/split) ●Timer (set unit: 1 second, maximum set: 60 minutes, measured in 1 second increments) ●5 time alarms/time signal ●Battery indicator display ●Power saving function (turns off the display after a certain period of time in a dark place to save power) ●Full auto calendar ●12/24 Time system display switching ●Operation sound ON/OFF switching function ●Date display (month/day display swap) ●Day of the week display (switchable between 6 languages: English, Spanish, French, German, Italian, and Russian) ●Double LED light: LED light for dial (with super illuminator, afterglow function, afterglow time switching (1.5 seconds/3 seconds)), LED backlight for LCD section (super illuminator, afterglow function, afterglow time switching (1.5 seconds)) seconds/3...