Casio W-735H-1AVDF Digital Sports Watch Black Resin

The Casio W-735H-1AVDF digital sports watch pairs a black resin case and strap with silent vibration alerts and a battery rated for about 10 years, making it a practical choice for swimmers, trainers and travellers. Its large digital LCD screen shows the time clearly, while the resin build keeps the watch light on the wrist for everyday and active use.

Water resistance is rated at 100 meters (10 bar), so the Casio W-735H-1AVDF digital sports watch can handle swimming and snorkeling but not scuba diving. A Super Illuminator LED backlight with afterglow lights the whole display for low-light reading. Dual time lets you keep a second time zone on screen, which helps on trips or when coordinating with another region. Timing tools include a 1/100-second stopwatch with split times, a 24-hour countdown timer that repeats automatically, a daily alarm and an hourly signal. The quartz movement keeps time, and the full auto-calendar runs to 2099.

Key features and benefits of the Casio W-735H-1AVDF

• Rugged digital design with large LCD display: The sporty case houses a big digital screen that is easy to read at a glance. That helps when you are moving, training or checking the time outdoors.
• Resin case and black resin strap: Both parts use a tough synthetic resin that stands up to knocks and sweat. The material keeps the Casio W-735H-1AVDF digital sports watch light for all-day comfort.
• Approximately 10-year battery life (CR2025): A single CR2025 lithium cell is designed to power the watch for about a decade under normal use. You spend less time arranging battery changes and more time wearing the watch.
• 100-meter water resistance (10 bar): The case is rated for pressure equivalent to 100 meters depth, so swimming and snorkeling are within its scope. It is not intended for scuba diving.
• Vibration alert: The watch can vibrate for alarms, countdown timer finishes, hourly signals and stopwatch countdowns instead of sounding a beep. Silent notices suit meetings, classrooms and other quiet places.
• Super Illuminator LED backlight with afterglow: A bright LED illuminates the full display and stays lit briefly after you release the button. Reading the time in a dark room or at night becomes easier without a phone.
• Dual time: You can display a second time zone next to the main time. This is useful for travel and for keeping in touch with people in another region.
• 1/100-second stopwatch with split time: The stopwatch measures to one-hundredth of a second, records split times and counts up to 24 hours. Coaches and athletes can capture precise laps during training.
• 24-hour countdown timer with auto-repeat: The timer can count down from as much as 24 hours and starts again automatically when it finishes. Interval sessions and recurring reminders become easier to manage.
• Daily alarm and hourly time signal: A daily alarm can sound or vibrate at a chosen time, and an optional hourly signal marks each hour. Both help you keep to a schedule without checking your phone.
• Full auto-calendar until 2099: The calendar adjusts for different month lengths and leap years through 2099. You do not need to correct the date by hand for decades.
• Quartz movement and 12/24-hour formats: Quartz timekeeping keeps the display steady, and you can switch between 12-hour AM/PM and 24-hour time. The choice suits personal preference or a workplace convention.

Who the Casio W-735H-1AVDF digital sports watch is for

The Casio W-735H-1AVDF digital sports watch suits men and women who want a durable digital watch for daily wear, sport and travel. Silent vibration alerts make it useful for professionals who need reminders without beeps, while the 100-meter water resistance gives swimmers and outdoor users peace of mind. A 10-year battery and auto-calendar keep maintenance low for people who prefer a set-and-forget watch.

• Office workers who want discreet alarms and hourly signals during meetings.
• Swimmers and surfers who need a watch rated to 100 meters for surface water activities.
• Travellers who use dual time and a calendar that runs to 2099.
• Fitness enthusiasts using the 1/100-second stopwatch and 24-hour countdown timer for interval training.
• Students who need a tough, easy-to-read watch with silent notifications for classes and exams.

Less suitable if: you need smartwatch features such as heart-rate monitoring, GPS tracking or smartphone notifications, because the Casio W-735H-1AVDF digital sports watch focuses on core timekeeping, alarms and timing tools.

Casio W-735H-1AVDF Digital Sports Watch Specifications

Using and caring for the Casio W-735H-1AVDF

Use the four side buttons on the Casio W-735H-1AVDF digital sports watch to move between modes, set alarms and turn on the backlight. After swimming in salt water or a chlorinated pool, rinse the case and strap with fresh water to remove residue. Keep the buttons dry while the watch is submerged, and clean the resin strap with mild soap and a soft cloth when needed. A professional battery change with a CR2025 cell helps preserve the case seal.

• Rinse with fresh water after contact with salt water or chlorine.
• Do not press the buttons while the watch is underwater.
• Clean the black resin strap with mild soap and a soft cloth.
• Have the CR2025 battery replaced by a professional so the seal is restored.
• Keep the watch away from extreme temperatures and strong magnetic fields.

How to Choose the Right Digital Sports Watch

When you choose a digital sports watch, water resistance, battery life, alert type and timing tools are the main factors to weigh. The Casio W-735H-1AVDF digital sports watch offers 100-meter water resistance (10 bar) for swimming and snorkeling, a battery life of approximately 10 years and vibration alerts for quiet settings. Its 1/100-second stopwatch, 24-hour countdown timer and dual time cover common training and travel needs. If you need scuba diving depth ratings, GPS or health sensors, a different type of watch would suit you better.

Frequently asked questions

What is the Casio W-735H-1AVDF digital sports watch made of?

The case and strap are made from synthetic resin, with the strap finished in black. This material is lightweight and resistant to impact and sweat, which helps for daily wear and sport.

Can I swim with the Casio W-735H-1AVDF digital sports watch?

Yes. It has 100-meter water resistance (10 bar), so it is suitable for swimming, snorkeling and surface water sports. It is not made for scuba diving.

How does the vibration alert work?

The watch vibrates for alarms, countdown timer finishes, hourly signals and stopwatch countdowns instead of only beeping. That makes the alerts discreet in meetings, classes or other quiet places.

What timing tools does the watch include?

It includes a 1/100-second stopwatch with split time, a 24-hour countdown timer with auto-repeat, a daily alarm and an hourly time signal. The stopwatch counts up to 24 hours, which covers long training sessions and events.

Can I set a second time zone?

Yes. The dual time function shows a second time zone alongside the main time. Travellers and people working with another region can check both at a glance.

How long does the battery last and what type is it?

The Casio W-735H-1AVDF digital sports watch uses a CR2025 lithium battery and is rated for approximately 10 years of normal use. A professional replacement helps keep the case seal intact.

Is the display readable in the dark?

Yes. The Super Illuminator LED backlight lights the full display and has an afterglow that remains briefly after you release the button. This helps you read the time in low light without disturbing others.

Does the calendar need adjusting for leap years?

No. The full auto-calendar is programmed until 2099 and adjusts for month lengths and leap years. You do not need to correct the date manually during that period.