From G-SHOCK, the watch that sets the standard for timekeeping toughness, comes the latest models to feature basic G-SHOCK black that captures the essence of one-tone resin. This model is based on the compact and practical AW-591 design. A simple matte black finish allows the form of the watch itself to come out, while the buckle, buttons, and bezel have a black ion plate finish.
Everything about this new basic black model captures the very essence of the rough, tough basic G-SHOCK image.
 
Specifications
Case / bezel material: Resin / Aluminum
Resin Band
Neobrite
Shock Resistant
Mineral Glass
200-meter water resistance
LED light
Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow
World time
29 time zones (27 cities + coordinated greenwich mean time), daylight saving on/off
1/100-second stopwatch
Measuring capacity: 59'59.99"
Measuring modes: Elapsed time, split time, 1st-2nd place times
Countdown timer
Measuring unit: 1 second
Countdown range: 60 minutes
Countdown start time setting range: 1 to 60 minutes (1-minute increments)
Others: Auto-repeat, progress beeper
5 daily alarms (with 1 snooze alarm)
Hourly time signal
Full auto-calendar (to year 2039)
12/24-hour format
Regular timekeeping
Analog: 2 hands (hour, minute (hand moves every 20 seconds))
Digital: Hour, minute, second, pm, month, date, day
Accuracy: ±15 seconds per month