2100 SERIES CASIO G-SHOCK GA-B2100-3A This is a brand new, unused item. Thank you. ■ Model Number CASIO G-SHOCK GA-B2100-3A ■ Color Base Color: Matte Green ■ Size/Weight Case Size (H×W×D): 48.5×45.4×11.9mm Weight: 52g ■ Standard Features ★ Shock Resistant (G-SHOCK) ★ Carbon Core Guard Structure ★ Inorganic Glass ★ 20-bar Water Resistance ★ Case/Bezel Material: Carbon/Resin ★ Strap Material: Resin ★ Tough Solar (Solar Charging System) ★ Neobrite ★ Strap Size: 145mm to 215mm ◎ Mobile Link Function ◎ ★ Compatible with the "CASIO WATCHES" app ★ Mobile Link Function (Function linking with Bluetooth communication with compatible mobile phones) ★ App Link Functions ・ Automatic Time Adjustment ・ Easy Watch Setting ・ World Time for approximately 300 cities ・ Time & Place ・ Reminder ・ Phone Finder ◎ Watch Functions ◎ ★ World Time: 38 cities worldwide (38 time zones*, with automatic summer time setting) + UTC (Coordinated Universal Time) time display, home time city swap function ★ Stopwatch: (1/100 second (less than 1 hour) / 1 second (1 hour or more), 24-hour counter, with lap/split) ★ Timer: (Set unit: 1 second, maximum set: 60 minutes, measured in 1-second increments) ★ Alarm/Hourly Time Signal: 5 time alarms, hourly time signal ★ Light: Double LED light: LED light for the face (Super Illuminator, afterglow function, afterglow time switching (1.5 seconds/3 seconds)), LED backlight for the LCD part (Super Illuminator, afterglow function, afterglow time switching (1.5 seconds/3 seconds)) ★ LED Light Color: White ★ Full Auto Calendar ★ Operation Tone ON/OFF Switching Function ★ Power Saving Function: (Displays are turned off to save power when left in the dark for a certain period of time) ★ Accuracy: When not linked with a smartphone, it operates with standard quartz accuracy (average monthly difference ±15 seconds). ★ Battery Indicator Display ★ Operating time from a full charge without solar power generation ・ When using functions: Approximately 7 months ・ When in power saving state: Approximately 18 months Accessories: Box, Booklet