G-Shock is a brand of watches manufactured by Casio, known for its resistance to shocks (e.g. hard knocks and strong vibrations). Its full form is Gravitational Shock. They are designed primarily for sports, military and outdoor adventure oriented activity; nearly all G-Shocks have some kind of

G-Shock is a brand of watches manufactured by Casio, known for its resistance to shocks (e.g. hard knocks and strong vibrations). Its full form is Gravitational Shock. They are designed primarily for sports, military and outdoor adventure oriented activity; nearly all G-Shocks have some kind of stopwatch feature, countdown timer, light and water resistance.

Product Features:

• G-LIDE surfers and extreme sports enthusiasts collection
• Wave Ceptor
• Mineral Glass
• Shock Resistant
• Tough Solar
• 200-meter water resistance
• Case / bezel material: Resin / Aluminum
• LED Backlight (Super Illuminator)
• Full auto LED light, selectable illumination duration, afterglow
• Solar powered
• Time calibration signal reception
• Auto receive up to six* times a day (remaining auto receives canceled as soon as one is successful)
• 5 times a day for the Chinese calibration signal
• The latest signal reception results
• Time Calibration Signals
• Frequency: 77.5 kHz
• World time
• 31 time zones (48 cities coordinated universal time), city code display, daylight saving on/off
• Moon data (moon age of the specific date, moon phase graph)
• Tide graph (tide level for specific date and time)
• Preset tide sites: 100 (global)
• 1/100-second stopwatch
• Measuring capacity: 59'59.99''
• Measuring modes: Elapsed time, split time, 1st-2nd place times
• 2 countdown timers
• Can be used during interval training that alternates between two different paces.
• Measuring unit: 1 second
• Input range: 00'05" to 99'55" (1-minute increments and 5-second increments)
• Other: Number of repeats settable from 1 to 10
• 5 daily alarms (with 1 snooze alarm)
• Hourly time signal
• Battery power indicator
• Power Saving (display goes blank to save power when the watch is left in the dark)
• Full auto-calendar (to Year 2099)
• 12/24-hour format
• Button operation tone on/off
• Regular timekeeping: Hour, minute, second, pm, month, day, day of the week
• Accuracy: ±15 seconds per month (with no signal calibration)
• Size of case: 55.1 × 52.5 × 16.3 mm
• Total weight: 72 g
• LED: White