Product Name G-SHOCK Solar G-STEEL CASIO G-SHOCK G-STEEL CASIO Men's Watch Tough Solar GST-B600D-1AJF Smartphone Link Product Number GST-B600D-1AJF Brand CASIO G-SHOCK Movement Analog-Digital Solar Module No.: 5724 ■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-second, 60-minute count, with lap/split) ■Timer (Set unit: 1 second, Maximum set: 60 minutes, Measures in 1-second increments) ■5 alarms, hourly time signal ■Battery charge warning function ■Power saving function (displays turn off after a set time in dark environments 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 (6 languages: English, Spanish, French, German, Italian, Russian) ■Double LED Light: Dial LED light (Super Illuminator, afterglow function, afterglow time switch (1.5 sec/3 sec)), LCD section LED backlight (Super Illuminator, afterglow function, afterglow time switch (1.5 sec/3 sec)) ■Operating time from full charge without solar power generation When functions are used: Approx. 7 months In power-saving mode: Approximately 18 months *When not paired with a smartphone, the watch operates with standard quartz accuracy (average monthly deviation ±15 seconds). CASIOWATCHES (Free): ■ Automatic time correction ■ Easy watch settings ■ World time for approximately 300 cities ■ Phone finder *Installation of the dedicated “CASIO WATCHES” app is required to establish a communication connection with a smartphone. 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 Fit Size: 125–185mm First Link Width: 23mm Band Adjustment: Spring Bar Type Crystal Material: Mineral Glass Case Material: Resin/Stainless Steel Case Size: 41.4 × 42.3 mm Case Thickness: 11.4 mm Band Material: Solid Stainless Steel Band Band Clasp Type: One-Push Triple-Fold Clasp Wrist Circumference (Max): 18.5 cm Dial Color: Black Weight: 135 g