Product Name G-SHOCK CASIO G-SHOCK Analog-Digital Watch Men's GBM-2100A-1A2JF Blue Metal Cover Product Number GBM-2100A-1A2JF Brand CASIO G-SHOCK Movement Analog-Digital Solar Module No.: 5729 ■Shock-Resistant Structure ■Tough Solar (Solar Charging System) ■20 Bar Water Resistance ■Mobile Link Function (Function linkage via Bluetooth communication with compatible mobile phones) ■Hand Shift Function (When the hands overlap the LCD display and are difficult to see, the hands can be temporarily shifted away from the LCD display) ■World Time: Displays time for 38 cities worldwide (38 time zones, with automatic daylight saving time adjustment) + UTC (Coordinated Universal Time), Home Time city swap function ■Stopwatch (1/100-second (under 1 hour)/1-second (over 1 hour), 24-hour timer, with lap/split) ■Timer (Set unit: 1 second, max set: 60 minutes, counts up in 1-second increments) ■5 alarms & hourly time signal ■Battery indicator display ■Power saving function (In dark environments, display turns off after a set period to conserve power) ■Full auto calendar ■12/24-hour format switch ■Operation sound ON/OFF switch ■Date display (Month/day display switch) ■Day of the week display (switchable between 6 languages: English, Spanish, French, German, Italian, Russian) ■Double LED light: LED light for dial (Super Illuminator, afterglow function, afterglow time switchable (1.5 seconds/3 seconds)), LED backlight for LCD section (Super Illuminator, afterglow function, afterglow time switchable (1.5 seconds/3 seconds)) ■Operating Time from Full Charge Without Solar Power Generation When Functions Used: Approx. 7 months In Power Saving Mode: Approx. 18 months *When not paired with a smartphone, it operates with standard quartz accuracy (average monthly deviation ±15 seconds). CASIO WATCHES (Free): ■Automatic Time Correction ■Easy Watch Settings ■World Time for Approx. 300 Cities ■Time & Place ■Reminder ■Mobile Phone Finder *Installation of the dedicated “CASIO WATCHES” app is required for communication with smartphones. Compatible with manufacturer-specified iPhone and Android smartphones. For details on verified devices and OS compatibility, please check the website. *Limited to devices equipped with Bluetooth. Shock Resistant Neo-Bright LED: White Band Fitting Size: 145–215mm First Link Width: 25.9mm Crystal Material: Inorganic Glass Case Material: Resin/Stainless Steel Case Size: 49.3 × 44.4mm Case Thickness: 11.9mm Band Material: Resin Band Band Clasp Type: Buckle Maximum Wrist Circumference: 21.5cm Dial Color: Blue Weight: 72g