Casio developed its first calculator in 1957, but it was not until 1974 with the release of the Casiotron that Casio entered the watch making a market.

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

Casio developed its first calculator in 1957, but it was not until 1974 with the release of the Casiotron that Casio entered the watch making a market.

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
• Resin Band
• LED Backlight (Super Illuminator)
• Full auto LED light, selectable illumination duration, afterglow
• Solar powered
• Time calibration signal reception
• Auto receives 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
• Manual receive
• The latest signal reception results
• Time Calibration Signals
• Station name: DCF77 (Mainflingen, Germany)
• Frequency: 77.5 kHz
• Station name: MSF (Anthorn, England)
• Frequency: 60.0 kHz
• Station name: WWVB (Fort Collins, United States)
• Frequency: 60.0 kHz
• Station name: JJY (Fukushima, Fukuoka/Saga, Japan)
• Frequency: 40.0 kHz (Fukushima) / 60.0 kHz (Fukuoka/Saga)
• Station name: BPC (Shangqiu City, Henan Province, China)
• Frequency: 68.5 kHz
• World time