This full-metal model from the “GA-2100” series—a digital/analog hybrid developed in the spirit of the first-generation G-SHOCK model, the DW-5000C—features smartphone connectivity. Stainless steel is used for the screw-back case, bezel, and band. While incorporating a shock-resistant structure to protect the module from impact in the event of a fall, the design aims for a simple, streamlined aesthetic. It also inherits the octagonal bezel shape and the dimpled band design featured on the “DW-5000C,” which debuted in 1983. By incorporating a slim, high-performance module made possible by high-density mounting technology, the watch achieves a slim profile. Great care was also taken to ensure exceptional comfort. The stainless steel bezel undergoes a labor-intensive process of forging, machining, and polishing to achieve a three-dimensional shape, with the top surface finished with a circular hairline pattern and the beveled edges polished to a mirror finish. By incorporating a fine resin cushion between the bezel and the case, we have enabled a shock-resistant structure utilizing the metal exterior. The dial features delicate detailing achieved through precision machining technology at Casio’s Yamagata Plant, combined with a vapor deposition process to create a high-quality finish. The slim, high-performance digital/analog combination module connects to a dedicated app via Bluetooth to retrieve time information and keep precise time. It also incorporates practical features such as Tough Solar and a high-brightness dual LED light. Product Details Product Number GM-B2100D-1AJF Series FULL METAL ANALOG-DIGITAL 2100 Series Dimensions (H × W × D) 49.8 × 44.4 × 12.8 mm Weight 165 g Case and Bezel Material Stainless Steel Band Solid Band Metal Band (Stainless Steel) One-push triple-fold clasp Construction Shock-resistant construction Water Resistance 20 atm Power Source & Battery Life Tough Solar (solar charging system) Mobile Link Function Mobile Link function (function synchronization via Bluetooth communication with compatible mobile phones) App Compatible with “CASIO WATCHES” App Link Function Automatic time correction Easy watch setup World Time for approximately 300 cities Time & Place Reminder Cell Phone Finder Glass Inorganic glass Case Back Screw-down case back Strap Size Range 150–205 mm Other Neobrite World Time World Time: Time display for 38 cities worldwide (38 time zones, with automatic daylight saving time adjustment) + UTC (Coordinated Universal Time); Home Time city swap function Stopwatch Stopwatch (1/100th of a second for times under 1 hour / 1 second for times of 1 hour or more, 24-hour counter, with lap and split functions) Timer Timer (Set in 1-second increments, maximum set time: 60 minutes, measures in 1-second increments) Alarm/Hourly Chime 5 time alarms, hourly chime Light Dual LED lights: LED light for the dial (Super Illuminator, afterglow function, afterglow duration switch (1.5 seconds/3 seconds)), LED backlight for the LCD display (Super Illuminator, afterglow function, afterglow duration switch (1.5 seconds/3 seconds)) Light Color LED: White Calendar Fully automatic calendar Operation Sound On/Off Switch Operation sound on/off switch Power-Saving Function Power-saving function (In dark environments, the display turns off after a set period of time to conserve power) Battery Indicator/Warning Battery indicator display Operating Time Operating time from a full charge without solar power generation When functions are in use: Approx. 7 months In power-saving mode: Approx. 18 months Accuracy Average monthly deviation: ±15 seconds (when not synchronized) Other Features Hand Retraction Function (When the hands overlap with the LCD display and make it difficult to read, the hands can be temporarily retracted from over the display) 12/24-Hour Format Switch Date Display (Month/Day Display Switch) Day of the Week Display (Switchable between 6 languages: English, Spanish, French, German, Italian, and Russian) ※It has five watch links. "IMPORTANT" Customs and taxes: Your country of residence may apply additional customs duties and import taxes. Please check the laws of your country before bidding. We cannot be held responsible for any expenses incurred for importing items into the purchaser's country of residence. If the winning bidder decides to cancel or withdraw, they will bear all risks, shipping costs, and return import duties.