Chronographs ain’t no big deal for Casio; they are building them for quite some time. So far, there have been many of them in both digital, analog and in the ana-digi formats, yet when EDIFICE (Casio’s line of multifunction, metal watches) unleashed the EQS series, the dual-layer dynamic designs turned many heads globally. Casio’s Tough Solar system now gets a pretty house. Take a look at all of them here.


The EQS capture speed and intelligence in their designs and evoke sensibilities to truly sense the innate spirit of velocity and energy of the motor sports. The rich functions and standout face designs make the EQS popular for a large age span, from young adults to those in their late-thirties.

The common features are:

  1. Sporty metal case with prominent edges.
  2. Instrument panel inspired watch faces.
  3. Sleek, automotive machine-derived appearance.

That expresses some good precision without compromising on speed.

The dual-layer dial designs emphasize an allover multi-dimensional look with five independent motors underneath, their variegated, dynamic movement patterns measuring time from various different angles. Its source of power is an ultra-small solar panel. It’s a highly efficient, electrical power generation unit that connects to a large-storing battery. The EQS are equipped with moderate features like full-auto backlight to advanced wizardries, such as temperature/atmospheric pressure/direction sensors. For EQS-1100DB, it will also be measuring 1/1000 of a second with its two disk indicators that borrow from car wheels and disc brakes.

But they are power guzzlers. Hence, TOUGH SOLAR watches recharge heftily even on rainy days; it doesn’t matter how dull the light is. So, a dim daylight or bright fluorescent lighting, both does your job. The recharging speed; however, varies with the intensity of the light. Like, on a sunny day, the outdoors are generally 50,000 Lx and the solar battery can rev up in 5 minutes enough power to keep working for 24 hours at a stretch. But underexposure to light might even dry up its battery, so an exposure to a strong light source for an hour once a week shall keep it charged eternally. Once the battery is full up to its brim, it will run for 150 days even if it’s in complete darkness. And should you worry about overcharging, the overcharge prevention function shall cut down any ill effects of excessive exposure to light.