Casio Digital W-738H-3AVDF 42.8mm Grey Dial Green Resin Strap Men's Watch

The Casio Standard Digital W-738H-3AVDF (popularly known among watch enthusiasts and active tool watch collectors by its series nicknames, the "Vibration Alarm Square", "Vibe Alert Square", or "Square Vibe") is a rugged, square-cased digital sports watch designed for silent notifications and active everyday wear. Combining a tactical khaki green colorway with a square face profile reminiscent of classic utility digital timepieces, this 42.8mm watch delivers a high-contrast digital display paired with a discreet vibration alert mechanism. Designed for professionals in quiet environments, students, outdoor enthusiasts, and athletes who require silent timing alerts, it transitions effortlessly from fitness training to casual daily routines.  The defining visual and functional highlight of this W-738H reference is its dedicated vibration alarm feature. Activating vibration mode silences all button operation tones and replaces traditional audible beeps with tactile wrist pulses for alarms, timers, and stopwatch auto-starts. The square resin case incorporates a dedicated vibration setting button highlighted with an accent color for intuitive mode switching, while the large LCD screen features a high-brightness amber LED backlight for instant readability in dark conditions.  Beneath its tactical exterior, the watch is driven by a precision Casio digital quartz module (Module 3588). Operating with a timekeeping accuracy rating of ±30 seconds per month, this electronic caliber is powered by a high-capacity CR2032 lithium coin battery, delivering an exceptional battery life of approximately 10 years under standard daily usage.  The watch housing measures 42.8mm in case width by 47.0mm in lug-to-lug length, featuring a mid-size profile thickness of 13.5mm and an ultra-lightweight weight of just 43 grams for comfortable all-day wear. The case is constructed from impact-absorbing resin paired with a tough resin glass lens. Engineered for active environments, the case achieves a certified 100-meter (10 bar / 330 ft) water resistance rating, allowing it to withstand swimming, snorkeling, and heavy outdoor exposure with complete reliability. The timepiece comes fitted on an ergonomic green resin strap featuring a fine hole-pitch adjustment system, ensuring a snug fit that allows vibration alerts to be felt clearly against the wrist.

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