G-Shock GA-100 Series

The GA-110's twin with its own dial language, built to shrug off shocks, water and magnets.

This page collects every Casio G-Shock GA-100 listed at Watch Portal. Every watch is 100% original and backed by a moneyback guarantee, and we have been selling online in the Philippines since 2015 with delivery nationwide.

What You'll Find Here

The GA-100 shares its 55 by 51.2mm shock resistant case and 200-meter water resistance with the GA-110, but wears a cleaner multi-layer dial of its own. It adds magnetic resistance, so phone mounts, speakers and laptop lids will not throw the hands off, and carries world time, a 1/100-second stopwatch and five daily alarms.

Prices currently run from ₱7,227 to ₱10,134. Highlights include the stealth black GA-100-1A1 known as the Dark Knight, the red GA-100B-4A, the camouflage GA-100CM line and plenty of two-tone colorways. If you want the big G-Shock look at the friendliest price in the family, this is usually where to start.

Why Shop at Watch Portal

• 100% original watches backed by a moneyback guarantee
• Selling online in the Philippines since 2015
• COD nationwide, plus GCash, cards and online banking
• Delivery after dispatch: Metro Manila 3 to 7 days, rest of the Philippines 4 to 10 days

Frequently Asked Questions

Are the watches at Watch Portal original?

Yes. Every watch we sell is 100% original and covered by our moneyback guarantee.

How much does a G-Shock GA-100 cost in the Philippines?

Current GA-100 prices at Watch Portal run from ₱7,227 to ₱10,134. The Dark Knight GA-100-1A1 sells for ₱7,596 and the red GA-100B-4A for ₱7,992.

What is the difference between the GA-100 and the GA-110?

They share the same case size and 200-meter water resistance. The GA-110 uses a bolder dial with metallic detailing, while the GA-100 has a simpler layered dial and adds magnetic resistance.

Can I swim with a GA-100?

Yes. The GA-100 is rated to 200-meter water resistance, which covers swimming and snorkeling.