Casio F-91W-1 Digital Watch

This iconic digital watch is renowned for its durability, affordability, and classic, timeless design that has remained largely unchanged since its introduction in 1989.

Features
Chronograph: A 0.01-second digital timer offering net, split, and separate first- and second-place
Alarm: Includes a daily alarm and an hourly time signal. 
Illumination: Features an LED or micro-light for visibility in the dark. 
Calendar: Includes an auto-calendar that keeps the date display accurate after initial setup, with February set to 28 days.
Water resistance: The watch is water resistant. 
Durability & Design: Features a sturdy resin case paired with a ribbed resin buckle-closure band.
Battery Life: The approximate battery life is around 7 years on a single CR2016 battery.