If you are looking for a budget-friendly digital watch that does not compromise on features, the Casio W-738H-3AV deserves serious attention. Launched in May 2026, this new model from Casio brings a square case design, a vibration alarm, 100-meter water resistance, and a 10-year battery life all in one compact package. Here is everything you need to know before you buy.
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Table of contents
- What is the Casio W-738H-3AV
- Casio W-738H-3AV Key Features at a Glance
- Design and Build Quality
- Vibration Alarm: The Standout Feature
- 100-Meter Water Resistance
- 10-Year Battery Life
- Stopwatch and Timer Functions
- LED Backlight
- Dual Time and Full Auto-Calendar
- Who Should Buy the Casio W-738H-3AV
- Casio W-738H-3AV vs W-736H-3AV: What Changed
- Where to Buy the Casio W-738H-3AV in India
- Final Verdict
What is the Casio W-738H-3AV
The Casio W-738H-3AV is the khaki green variant of Casio’s new W-738H series. It belongs to Casio’s standard (non-G-Shock) lineup and is designed for people who want a practical, durable everyday watch without spending a lot. The square case gives it a modern G-Shock-like look while keeping the price well within reach.
The W-738H-3AV is the direct successor in spirit to the popular W-736H series, now redesigned in a square case that many users prefer.
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Casio W-738H-3AV Key Features at a Glance
| Feature | Details |
|---|---|
| Case Size | 47 x 42.8 x 13.5 mm |
| Weight | 43 g |
| Case Material | Resin |
| Band Material | Resin |
| Water Resistance | 100 meters |
| Battery Life | Approx. 10 years (CR2032) |
| Display | Large digital LCD with amber LED backlight |
| Stopwatch | 1/100-second, elapsed/split/1st-2nd place |
| Countdown Timer | Up to 24 hours |
| Alarm | Daily alarm with vibration alert |
| Dual Time | Yes |
| Calendar | Full auto-calendar up to 2099 |
| Accuracy | +/- 30 seconds per month |
| Band Size Fit | 145 to 215 mm |
Design and Build Quality
The W-738H-3AV comes in a khaki green colorway that gives it a distinct military-inspired look. The square case measures 47 x 42.8 mm, making it a mid-size watch that sits comfortably on most wrists without feeling too bulky.
At just 43 grams, it is lightweight enough for all-day wear. The full resin construction keeps it light and resistant to everyday bumps and knocks. The band features a shorter hole pitch compared to older models, which allows for finer strap adjustment and ensures the vibration alert is easier to feel on the wrist.
The controls are well laid out. The start and vibration setting button is visually distinct in both shape and accent color, making it easy to find without looking. The center light button is compact but remains easy to press even during physical activity.
Vibration Alarm: The Standout Feature
The biggest selling point of the Casio W-738H-3AV is its vibration alarm system. By holding the start button for two seconds in timekeeping mode, the watch switches all audio alerts to vibration. This means the stopwatch, countdown timer, daily alarm, and hourly time signal all vibrate instead of beep.
This feature is extremely useful for:
- People working in quiet environments like offices or libraries
- Those who attend meetings frequently and need silent alerts
- Students in classrooms or examination halls
- Anyone who finds beeping alarms disruptive
When vibration mode is active, the button operation sound is also automatically disabled, keeping the watch fully silent during use.
100-Meter Water Resistance
The Casio W-738H-3AV is water resistant up to 100 meters, which means it can handle swimming, snorkeling, and water sports without any issues. This level of water resistance is impressive for a watch in this price category and makes it a solid choice for active users.
Whether you are caught in heavy rain, working outdoors, or doing laps in a pool, this watch can handle it.
10-Year Battery Life
Powered by a single CR2032 battery, the W-738H-3AV is rated for approximately 10 years of battery life. This is one of the most practical advantages of buying a Casio standard digital watch. You will not need to worry about charging it daily or replacing batteries frequently.
Stopwatch and Timer Functions
The 1/100-second stopwatch supports the following modes:
- Elapsed time
- Split time
- 1st and 2nd place timing
It also has a 5-second countdown auto-start feature, which is handy for sports or race timing. The countdown timer covers a range of up to 24 hours with settings adjustable in 1-second, 1-minute, and 1-hour increments.
LED Backlight
The amber-colored LED backlight provides clear visibility in low-light conditions. The afterglow function keeps the display illuminated for a short time after the button is released, which is a practical touch for nighttime use.
Dual Time and Full Auto-Calendar
The dual time function allows you to track two time zones simultaneously, which is useful for travelers or remote workers dealing with international teams. The full auto-calendar is pre-programmed up to the year 2099 and automatically accounts for months with different numbers of days.
Who Should Buy the Casio W-738H-3AV
This watch is a great fit for:
- Students and professionals who need a silent vibration alarm
- Outdoor enthusiasts who need 100m water resistance
- Budget-conscious buyers who want a long-lasting, reliable digital watch
- Fans of the square G-Shock aesthetic without the G-Shock price tag
- People who prefer a lightweight and low-maintenance everyday watch
Casio W-738H-3AV vs W-736H-3AV: What Changed
| Feature | W-738H-3AV (New 2026) | W-736H-3AV (Previous) |
|---|---|---|
| Case Shape | Square | Round |
| Case Size | 47 x 42.8 x 13.5 mm | Different dimensions |
| Band Hole Pitch | Shorter for better vibration feel | Standard |
| Vibration Alarm | Yes | Yes |
| Water Resistance | 100m | 100m |
| Battery Life | 10 years | 10 years |
The W-738H-3AV is essentially a square-case version of the W-736H, offering the same core feature set in a more modern form factor. If you like the W-736H but prefer a square case design, the W-738H-3AV is the natural upgrade.
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Where to Buy the Casio W-738H-3AV in India
The W-738H-3AV is a brand new May 2026 release. As availability on Amazon India increases, you can search for it directly using the link below. In the meantime, the similar W-736H series is readily available and a solid alternative.
Search Casio W-738H on Amazon India
Buy Casio W-736H-3AV on Amazon India (Similar Model)
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Final Verdict
The Casio W-738H-3AV is one of the most well-rounded affordable digital watches available in 2026. It packs a vibration alarm, 100-meter water resistance, a 10-year battery, large readable display, and a modern square case all into a lightweight 43-gram package.
For anyone who wants a reliable, no-fuss everyday watch that works in the office, at the gym, or in the water, the W-738H-3AV is hard to beat at its price point. The khaki colorway also gives it a subtle, versatile look that works across casual and semi-formal settings.
Check Current Price and Availability on Amazon India
Official site – casio.com
Note on Amazon availability: Since the W-738H-3AV launched in May 2026, it may take a few weeks to appear on Amazon.in. The links above are set up to show results as soon as the product is listed. Bookmark this page and check back soon.