CASIO G-SHOCK GA-2200-2AJF Carbon Core Guard Analog Digital Watch GA-2200-2 | eBay
Casio G-Shock GA100CB-1A World Time Ana-Digi Dive Watch Review - YouTube
Amazon.com: Casio Men's G XL Series Quartz Watch Strap, WR Shock Resistant Resin Color: Black and Blue (Model: GA-100-1A2CR) : Clothing, Shoes & Jewelry
Casio G-Shock GA-100-1A2Er- Review: Not the best but The Coolest G Shock - YouTube
Amazon.com: Casio Men's G XL Series Quartz Watch Strap, WR Shock Resistant Resin Color: Black and Blue (Model: GA-100-1A2CR) : Clothing, Shoes & Jewelry
G Shock GA 100 (module 5081) User manual and a VERY detailed functions overview - YouTube