Equipped with a stop watch, countdown timer, alarm and dual-time display, this watch is the ultimate accessory for those always on the go.… | Instagram
Casio] W-800H. Modified to have a countdown timer function!!! : r/Watches
Amazon.com: Casio Mens G-Shock Digital Watch, with Quartz Digital Movement, and Multi-Function Alarm, Stopwatch, and Countdown Timer, Auto Calendar, Water-Resistant to 200 M (660 Feet) : Clothing, Shoes & Jewelry
Modding A Casio W800-H With A Countdown Timer | Hackaday
Casio watches with the most features for under 20 bucks - menga.net
Casio Mens G-Shock Stopwatch countdown Timer 200M Water Resistant