[Product Information] Brand: G-SHOCK Materials: glass [Product Description] ・G-SHOCK is a watch that will not break even if dropped, creating a new concept of toughness in watches. Inheriting the design concept of the first-generation G-SHOCK, the GA-2100 retains the octagonal form and is equipped with a smartphone link and tough solar. ・[Shock-resistant structure/water resistant to 20 ATM] G-SHOCK's core technology pursues toughness A shock-resistant structure protects the module The unique uneven shape prevents direct impact to the glass and buttons. Can be used in a variety of places and situations, from daily water work to water activities such as swimming, surfing, and jet skiing. ・[Mobile link function] Functions can be linked with compatible mobile phones via BluetoothⓇ communication. ・[Solar Power] Casio's unique solar charging system enables stable operation of 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. ・[Other product specifications] Hand retraction function / World time / LED light / Stopwatch / Timer / Time alarm / Power saving function / Battery indicator display / Fully automatic calendar / 12/24 time display switching explanation Inheriting the design concept of the first generation G-SHOCK, the GA-2100 retains its octagonal form and is equipped with a smartphone link and tough solar. In order to cope with the increase in the number of parts due to higher functionality, we have developed a new thin module with optimized board layout. By combining it with the carbon core guard structure, it maintains the size of the previous model. The blue, green, and yellow case and band colors are a reprint of the first colors first used in the 5600 series. The three models, blue, green, and all black, are finished in minimalistic coloring. ●Shockproof structure ●Tough solar (solar charging system) ●20 ATM waterproof function ●Mobile link function (function linked with compatible mobile phone via BluetoothⓇ communication) ●Hand retraction function (if the hands overlap with the LCD display and are difficult to see, (The hands can be temporarily moved from above the LCD display) ●World Time: 38 cities around the world (38 time zones, automatic summer 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) Time alarm 5 Book/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 automatic calendar● 12/24 time format display switching ●Operation sound ON/OFF switching function ●Date display (switching month/day display) ●Day display (switching between 6 languages: English...