Casio F91W Series | Digital Watch | Water Resistant | LED
Product Overview
The Casio F91W Series Digital Watch is a lightweight, no-nonsense timepiece built for everyday reliability. Since its introduction, this iconic digital watch has become a trusted companion for students, professionals, fitness enthusiasts, and anyone who values practicality over flash. With its simple yet effective design, the F91W delivers essential timekeeping functions without unnecessary complexity. Whether you’re timing a workout, catching a bus, or just keeping track of your day, this watch performs with quiet consistency. Its 7-year battery life means minimal upkeep, while features like water resistance and an LED backlight ensure it works when you need it—rain or shine, day or night.
Key Features
- Water Resistant (30 meters / 100 feet): Designed to withstand everyday exposure to water, including accidental splashes, rain, and brief contact during handwashing. While it can handle wet conditions, it is not suitable for swimming, showering, or diving. Avoid pressing buttons while submerged.
- LED Light: A built-in electroluminescent backlight activates with a button press, illuminating the digital display clearly in dark environments. Whether you’re checking the time at night, in a dimly lit room, or outdoors after sunset, the display remains easy to read.
- 1/100 Second Stopwatch: Offers precise timing with accuracy down to one-hundredth of a second. Ideal for measuring short intervals during workouts, training sessions, or timed tasks. The stopwatch function is simple to operate, making it useful for both casual and athletic use.
- Regular Timekeeping (HR, Min, SEC, PM, Date, Day): Displays hours, minutes, seconds, AM/PM indicator, current date, and day of the week. This full suite of time and calendar information is shown on a clear digital screen, allowing you to stay organized at a glance.
- Daily Alarm: Set a single alarm to sound once per day at your chosen time. Perfect for reminders related to school, work, medication, or daily routines. The alarm is easy to activate and adjust using the watch’s intuitive button layout.
- Lightweight Design: Weighing just 3.2 ounces, the F91W sits comfortably on the wrist without adding bulk. Its slim profile and flexible resin band make it ideal for all-day wear, whether you’re at a desk, in class, or on the move.
- 7-Year Battery Life: Powered by a single lithium metal battery (included), the watch is engineered for long-term use with minimal maintenance. This extended lifespan reduces the hassle of frequent battery changes and supports reliable performance over time.
- Casio Accuracy and Reliability: Backed by Casio’s long-standing commitment to precision engineering, the F91W delivers consistent timekeeping performance. Known for durability and dependability, this watch reflects Casio’s philosophy of creating products that meet real-world needs through practical innovation.
Technical Specifications
- Product Dimensions: 4.2 x 3 x 2.1 inches
- Weight: 3.2 ounces
- Item Model Number: F91WM-9A
- Department: Unisex
- Battery: 1 Lithium Metal battery (included)
- Water Resistance: 30 meters (100 feet)
- Manufacturer: Casio
- ASIN: B01MZF6LL2
- Date First Available: February 10, 2017
Benefits & Use Cases
The Casio F91W is a versatile choice for daily life. Its stopwatch function makes it a practical tool for runners, gym-goers, or anyone timing exercises or tasks. The daily alarm helps maintain routines, whether for waking up, taking breaks, or remembering appointments. The LED light ensures the watch remains functional in low-light conditions, such as early mornings, late nights, or dimly lit spaces. Thanks to its water resistance, it’s safe to wear during light rain or while washing hands. The lightweight construction means you’ll barely notice it on your wrist, making it ideal for long wear during work, school, or travel. With a 7-year battery life, you can set it and forget it—perfect for those who want dependable performance without constant attention.
Important Notes
While the watch is water resistant up to 30 meters, it is not designed for swimming, showering, or submersion. Do not press buttons underwater. The manufacturer’s warranty is available upon request through customer service. This model is not discontinued by the manufacturer. The package includes one Casio F91W watch with a pre-installed battery—no additional setup required.
