casio G-Shock Classic AnaDigi Men's Watch Black/Orange GA-2100-1A4ER Shockproof wristwatch for men with analog and digital time display, battery-operated quartz movement, automatic calendar with date, month and day of the week, 12/24 hour format, world time function for up to 29 different time zones, stop function up to 24 hours in 1/100 second increments, countdown timer up to 24 hours in 1/1 second, 5 daily alarms, hand moving function for a clear view of the display, Button tones on/off, black dial with orange accents, luminescent hands, raised indices, LED lighting, carbon-reinforced black resin case, screwed stainless steel case back, scratch-resistant mineral glass, black resin strap with pin buckle, waterproof up to 20 bar, size 48.5 x 45.4 x 11.8 mm.