From super-tough G-SHOCK comes a new collection of GA-400 with a large rotary switch for intuitive operation. Basic G-SHOCK black is accented in silver to create a HIP-HOP artist or B-BOY fashion item motif. Black with silver, which are employed in a large number of accessories, is used on the case, band, and face, for a boldly cool design.
ISO764 class magnetic resistance Rotary switch

Specifications

Glass: Mineral Glass

Construction: Magnetic Resistant, Shock Resistant

Water Resistance: 200-meter 

Case / Bezel Material: Resin

Band: Resin 

Light: LED light Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow

World Time: 31 time zones (48 cities + coordinated universal time), one-touch UTC time zone, daylight saving on/off, Home city/World time city swapping

Stopwatch: 1/100-second 

Measuring Capacity: 23:59'59.99''

Measuring Modes: Elapsed time, split time

Countdown Timer

Measuring Unit: 1 second

Countdown Range: 60 minutes

Countdown Start Time Setting Range: 1 minute to 60 minutes (1-minute increments)

Other: Auto switching to elapsed time measurement (up to 60 minutes, 1-second units)
when the end of a countdown timer operation is reached

Alarms: 5 daily alarms (with 1 snooze alarm)

Signal: Hourly time signal

Calendar: Full auto-calendar (to year 2099)

Hour Format: 12/24

Button Operation Tone: on/off

Timekeeping:  Regular 

Analog: 2 hands (hour, minute (hand moves every 20 seconds))

Digital: Hour, minute, second, pm, month, date, day

Accuracy: ±15 seconds per month

Approx. Battery Life: 3 years on SR927W × 2

Size of Case: 55 × 51.9 × 18.3 mm

Total Weight: 70 g

LED: Amber