Since its launch in 1983 the toughness watch G-SHOCK has continued to evolve in pursuit of insatiable strength. - It will be a color model of the GA-2100 series featuring an octagonal design.[ Shock-resistant structure & 20 ATM water resistant] Uses a shock-resistant structure that is resistant to shock and vibration. - Equipped with 20 ATM water resistance it can be used in various places and situations[Needle retraction function] When the needle overlaps the liquid crystal display and is difficult to see the needle can be temporarily retracted from the liquid crystal display. [World time] Time display of 48 cities around the world (31 time zones with daylight saving time setting function) + UTC (Coordinated Universal Time) [Other product specifications] Please check the description column - Since its launch in 1983 the toughness watch G-SHOCK has continued to evolve in pursuit of insatiable strength. - A color model of the GA-2100 series featuring an octagonal design. - The entire model is unified in black with a matte texture and the popular silver vapor-deposited dial is adopted for the face. - Finished in a chic design that can be used as a fashion item - It has a cool design that can be used widely combining toughness and design. ・Shock-resistant structure ・Water resistant to 20 bar ・Hand retraction function・ World time: 48 cities around the world (31 time zones with summer time setting function) + UTC (Coordinated Universal Time)・ Stopwatch (1/100 second (less than 1 hour) / 1 second (more than 1 hour) 24-hour counter with split)・ Timer (set unit: 1 second maximum set: 24 hours measured in 1 second units)・ 5 time alarms・ Time signal・ Full auto calendar・ 12/24 hour system display switching・ Operation sound ON/OFF switching function・ Double LED light: LED light for dial (super illuminator afterglow function afterglow time switch (1.5 second/3 seconds) LED backlight for LCD (super illuminator afterglow function afterglow time switching (1.5 seconds/3 seconds))・ Battery life about 3 years