The Casio G-Shock Analogue/Digital Watch GA-100-1A1ER is a timepiece that exudes a 'means business' vibe with its military-style covert dashboard dial packed with analogue and digital information and lifted by the machined styling of the hands.

• Auto LED: Lght-emitting diode (LED) is used to illuminate watch face, including Auto Light Switch illumination when watch is angled towards face
• Shock Resistance: Shock-resistant construction protects against impact and vibration
• Magnetic Resistance: JIS Class Level 1* magnetic resistance protects against effects of magnetic fields (*equiv ISO Standard 764)
• World Time: Displays current time in major cities and specific areas around world
• Stopwatch Function (1/1000 - 100HR): Measures mean time with accuracy of thousandth part seconds and end time up to 100 hours
• Timer 1/1 min - 24 hours (with automatic repeat) : Countdown timers give off audible signal at set time then count back automatically from 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
• Battery Life: One battery will power your watch for about 2 years
• Full Auto Calendar: Allowances are made automatically for months of different lengths
• 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: Perfect for free diving without scuba gear: watch is water resistant to 20 bar (200 metres - not diving depth but air pressure used in course of water resistance test ISO 2281)
• Accuracy: ±15 seconds per month
• Battery Type: CR1220
• Dimensions (H x W x D): Approx 55 x 51.2 x 16.9 mm
• Weight: 70 g