The Casio G'zOne Commando is absolutely the choice if you want a rugged and durable Android smartphone. Its tough construction is built to withstand everyday drops and spills, so it's well suited for industrial workers or simply those who love the great outdoors.

The Casio G'zOne Commando is a smartphone which is ruggedized and runs the Android operating system.

Casio Duro Microsoft founder Bill Gates is often seen sporting a Casio Duro, a model that retails for around US$70.

G-Shock watches are expensive because of their advanced technology, durable design, and reputation for quality.

G-Shock watches are expensive because of their advanced technology, durable design, and reputation for quality.

The best digital and analog-digital watches for military personnel, law enforcement, and athletes. G-SHOCKs are considered the most durable, toughest, and reliable watches by outdoor aficionados.

Omega Speedmaster watches have been used multiple time on trips to space. Elon Musk has also been seen wearing an Omega watch. His model of choice appears to be the Seamaster Aqua Terra, which retails at a similar price point, according to GQ.

What Kind of Watch Does Elon Musk Wear?

• OmegaSpeedmaster Racing Automatic Chronograph Men's Watch 326.30.40.50.01.001.
• RolexSubmariner Automatic Chronometer Black Dial Men's Watch 124060BKSO.
• OmegaSeamaster Automatic Blue Dial Steel Men's Watch 210.30.42.20.03.001.
• Seiko5 Automatic Black Arabic Dial Men's Watch SNKP21J1.

You cannot consider Casio G-Shock MR-G line as an investment and neither it is waste of money. People buy these watches for their technology for their love of these line of G-Shocks. It is a statement for all G-Shock lovers.

Leading-edge technology and artisanal craftwork. View our premium luxury watch collection made with titanium and sapphire glass. These are the best-in-class watches by G-SHOCK.

G-Shock GA 100 It's a tactical watch heavily recommended by Navy Seals for rescue missions. It comes in a sleek, matte-black finish that doesn't stand out too much. Like all made-for-Seal watches, it's waterproof, shock-resistant, and has a 24-hour digital display.

Microsoft founder Bill Gates is often seen sporting a Casio Duro, a model that retails for around US$70.