Product Name G-SHOCK CASIO G-SHOCK Men's Watch GM-2100-1AJF Product Number GM-2100-1AJF Brand CASIO G-SHOCK Movement Analog-Digital Quartz Module No.: 5611 ■Shock-Resistant Structure ■20 Bar Water Resistance ■Hand-Wipe Function (When hands overlap the LCD display, they can be temporarily moved out of the way) ■World Time: Displays time for 48 cities worldwide (31 time zones, with daylight saving time setting) + UTC (Coordinated Universal Time) ■Stopwatch (1/100-second (under 1 hour)/1-second (over 1 hour), 24-hour timer, with split time) ■Timer (Set unit: 1 second, Maximum set: 24 hours, Measures in 1-second increments) ■5 alarms & hourly time signal ■Full auto calendar ■12/24-hour format switch ■Operation sound ON/OFF switch ■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)) ■Approx. 3-year battery life Accuracy: ±15 seconds Shock Resistant Neobrite LED: White Band Adjustable Size: 145–215mm Crystal Material: Inorganic Glass Case Material: Resin/Stainless Steel Case Size: 49.3×44.4mm Case Thickness: 11.8mm Band Material: Resin Band Band Clasp Type: Buckle Wrist Circumference (Max): 21.5cm Dial Color: Gray Weight: 72g