The Casio G-Shock Watch GA-100-1A4ER is a bold faced, tough-bodied, analogue/digital G-Shock watch with a whole host of features to complement the striking appearance.

•  Auto LED: Light-emitting diode (LED) is used to illuminate watch face, incl Auto Light Switch feature that illuminates display when watch is angled towards face
• Shock Resistant: Shock-resistant construction protects against impact and vibration
• Magnetic resistant: JIS Class Level 1 (equiv to ISO Standard 764) magnetic resistance protects against effects of magnetic fields
• World Time: Displays current time in major cities and specific areas around world
• Stopwatch function (1/1000 - 100HR): Measures with accuracy of thousandth part seconds mean time and end time
• Timer - 1/1 min - 24 hours (with automatic repeat): For fans of precision, countdown timers help remember specific or recurring events by giving off audible signal at pre-set time
• 5 Daily Alarms: Daily alarm reminds you about recurring events with acoustic signal at time you have set
• Snooze Feature: Each time you stop alarm, it sounds again after few minutes
• One battery will supply your watch with the power it needs for about 2 years
• Full Auto Calendar: Allowances are made automatically for months of different lengths in case date corrections for leap years are required
• 12/24-hour Timekeeping: Times can be displayed in 12-hour or 24-hour format
• Mineral Glass: Hard glass resists scratching.
• Resin Case
• Resin Band
• Water resistance classification (20 bar/200 m): Perfect for free diving without scuba gear: watch is water resistant to 20 bar (200 m); metres value does not relate to diving depth but to air pressure used in course of water resistance test (ISO 2281)
• Accuracy: ±15 seconds per month
• Type of battery: CR1220
• Dimensions (H x W x D): Approx 55 x 51.2 x 16.9 mm
• Weight: Approx 70 g