Singapore is hot, humid and sunny, which makes it a long exam for watches. The Casio Watch Men g Shock Ultra-Thin (S$134.70, about a night out at Clarke Quay, plus the cab home) is meant for that, or for weekend dives.
- What you get with the Casio Watch Men g Shock Ultra-Thin
- Does it suit Singapore weather?
- Who should buy it, and who should skip it
- Water resistance, solar and upkeep
- Is it genuine? Buying from AliExpress in Singapore
- The verdict
- FAQ
What you get with the Casio Watch Men g Shock Ultra-Thin
It is a Casio-branded watch listed at S$134.70 (marked down from S$310.05), with 120+ recent orders and a 98.7% positive rating.
The listing title mentions: Model GA-2100 and 200 m water resistance. Confirm the details on the product page, because titles are written by sellers, not by an editor with a conscience.
Does it suit Singapore weather?
Dive and outdoor models are popular targets for fakes. Read our fake-spotting guide and verify the store before buying.
Who should buy it, and who should skip it
Good fit: Runners, swimmers, hikers and weekend divers who want a watch that is not precious about water and sun.
Skip it if: Anyone who wants a slim dress watch, or who expects certified dive performance from a listing that does not state it.
Water resistance, solar and upkeep
Rinse with fresh water after sea or pool use. Keep solar models exposed to light regularly. A watch rated for diving still needs its seals checked occasionally, so keep service in mind.
Is it genuine? Buying from AliExpress in Singapore
Authenticity: open reviews with photos and look at the caseback. Genuine Casios show a model number and module number there. If buyers post blurry or missing casebacks, be careful.
Warranty: Casio's warranty terms can differ by market. If local after-sales support matters to you, confirm coverage before buying from an overseas seller.
Delivery: AliExpress shows an estimated arrival date at checkout. Give yourself a buffer if the watch is a gift, because "arrives before the dinner" is a promise nobody can make.
Tax: the price you see may or may not include GST. Compare final totals, not headline prices.
Returns: read the seller's return terms and the Buyer Protection window before paying, and film yourself opening the package. For a watch, that thirty seconds is cheaper than a dispute later.
The verdict
At S$134.70, the Casio Watch Men g Shock Ultra-Thin could be a solid outdoor watch. Verify before you rely on its water rating.
What works
- Strong water resistance on many models
- Solar options reduce battery worries
- Built for heat and sweat
What to watch for
- Higher prices attract fakes
- Bigger cases
- Radio sync may not work in Singapore
Quick answers
Is this watch suitable for diving?
Only if the listing and model confirm a dive-grade rating. Check the product page and Casio's model information before relying on it.
Does solar work in Singapore?
Yes, solar models charge well in our sunshine, and slower under indoor light.
Does this ship to Singapore?
Listings on this site are requested for Singapore delivery and shown in S$. Confirm the delivery estimate, GST and final price at checkout.
Ready to see the current price?
Buy on AliExpressThis write-up is based on the listing details and general know-how. We have not tested this specific product. Last updated 2026-10-16.
Read before you buy
- Casio water resistance and Singapore humidity: what the numbers mean
50 m, 100 m, 200 m: what Casio water resistance ratings mean in real life, and how to look after your watch in Singapore heat, sweat and sea.
- Buying a Casio on AliExpress in Singapore: warranty, GST, delivery
What to know before buying a Casio on AliExpress in Singapore: warranty limits, GST at checkout, delivery times, returns and when to buy locally instead.
