Casio F91W Series | Digital Watch | Water Resistant | LED

Product Overview

The Casio F91W Series is a classic digital watch known for its reliability, simplicity, and long-lasting performance. Designed for everyday wear, it combines practical functionality with a lightweight, comfortable fit suitable for all genders. Whether you’re tracking time during workouts, managing daily schedules, or needing a dependable timepiece for school or work, the F91W delivers consistent accuracy. Its minimalist design and durable build make it a trusted companion for those who value practicality without compromising on essential features. With a battery life of up to seven years, this watch is built to keep up with your routine—no frequent charging or replacements required.

Key Features

• 30 Meter (100 Feet) Water Resistant: Built to handle everyday exposure to moisture, this watch withstands accidental splashes from handwashing, rain, or brief contact with water. It is not designed for swimming, showering, or submersion, making it ideal for daily activities where water resistance is a practical benefit.
• Daily Alarm: Stay on schedule with a reliable daily alarm function that ensures you never miss an important meeting, class, or reminder. The alarm is simple to set and consistently accurate, supporting punctuality in your daily routine.
• 1/100 Second Stopwatch: Perfect for timing exercises, cooking, or any activity requiring precise measurement, the stopwatch measures elapsed time down to one-hundredth of a second. This level of detail supports fitness tracking, sports training, or any task where split-second accuracy matters.
• LED Light: The built-in LED illumination allows you to easily read the time in low-light conditions, such as at night, in dimly lit rooms, or during outdoor activities after dark. The light activates with a simple button press for quick visibility.
• Regular Time Keeping (HR, Min, SEC, PM, Date, Day): Displays hours, minutes, seconds, AM/PM indicator, current date, and day of the week for comprehensive time management. This full range of information helps you stay organized and aware of both time and calendar details at a glance.
• Lightweight Design: Weighing just 3.2 ounces, the watch is comfortable for all-day wear without causing strain or discomfort. Its slim profile and ergonomic fit make it suitable for active lifestyles and extended use.
• 7 Year Battery Life: Powered by a single lithium metal battery (included), the F91W offers exceptional longevity—up to seven years of continuous use. This reduces the need for frequent replacements and ensures reliable performance over time.
• Casio Accuracy and Reliability: Backed by decades of watchmaking expertise, Casio ensures precise timekeeping and durable construction. The F91W is engineered to maintain accuracy under normal conditions and resist wear from daily use.

Technical Specifications

• Model Number: F-91WM-7ACF
• Department: Unisex
• Product Dimensions: 4.2 x 3.3 x 2.2 inches
• Weight: 3.2 ounces
• Battery: 1 Lithium Metal battery (included)
• Water Resistance: 30 meters (100 feet)—suitable for splashes, not swimming
• Display: Digital with LED backlight
• Functions: Time (HR, Min, SEC, PM), Date, Day, Daily Alarm, 1/100 SEC Stopwatch
• Manufacturer: Casio
• ASIN: B01N7XKNSX
• Date First Available: February 10, 2017

Benefits & Use Cases

The Casio F91W is ideal for students, professionals, fitness enthusiasts, and anyone seeking a no-nonsense digital watch that performs reliably day after day. Its stopwatch and alarm functions make it useful for timing workouts, managing study sessions, or coordinating daily tasks. The water resistance adds peace of mind during daily routines involving water exposure, while the long battery life ensures uninterrupted use. Its lightweight and compact design make it comfortable for all-day wear, whether at work, school, or during physical activities. The LED light enhances usability in low-light environments, such as early morning runs or nighttime emergencies. As a unisex model, it suits a wide range of wrist sizes and style preferences, offering a functional, understated look that pairs well with casual and formal attire.

Important Notes

While the watch is water resistant up to 30 meters, it is not suitable for swimming, diving, or showering. Prolonged exposure to water or high-pressure streams may compromise its integrity. The battery is included and designed to last up to seven years under normal use—replacement should be handled carefully to maintain water resistance. This model is not discontinued by the manufacturer and remains a popular choice due to its proven durability and essential features. Always refer to the included instructions for proper care and maintenance to ensure long-term performance.