Smart Access Electronic Crown w/Quick-lock
1/20th Second Chronograph
10-lap memory

At a glance

Built with Casio’s original Smart Access Technology, the EQSA500B-1A offers advanced functionality in addition to style and comfort.

Smart Access Technology permits easier, more intuitive operation of multiple watch functions by controlling independent hand movement, made possible by a new 5-motor layout, via an electronic crown. For example, the chronograph can record up to 10 lap times at an accuracy of 1/20th second and lap time results can be accessed using the electronic crown’s pull and turn motion. Silver Stainless Steel band chronograph watch with black and red face.



    • Tough Solar Power
    • 100M Water Resistant
    • World Time 29 times zones (29 cities + UTC), city code display, daylight saving on/off, auto DST on/off, home city/world time swapping
    • Beeper alarm
    • 1/20 second chronograph Measuring capacity: 59’59.95” Measuring mode: Elapsed time, lap time (10 lap memories + best lap)
    • Countdown Timer Measuring unit: 1 second Countdown start time setting range: 1 to 60 minutes (1-minute increments)
    • Date Display
    • Day of week indicator
    • Full auto-calendar (pre-programmed until the year 2099)
    • 12/24 hour formats
    • Accuracy: +/- 15 seconds per month
    • Storage battery: Solar rechargeable battery
    • Power saving function
    • Battery Level Indicator
    • Approx. battery life: 8 months on full charge (without further exposure to light)
    • Screw-lock crown
    • Screw-lock back
    • Stainless Steel Case
    • Solid Stsinless Steel Band (EQSA500DB & EQSA500RB) Double-lock, 1-press 3-fold Buckle (EQSA500DB & EQSA500RB)
    • Resin Band (EQSA500B)
    • Module: 5289


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