Mechanics 3 min read
The simple science of quartz watches
Learn how a battery, a tiny crystal and a simple circuit work together to keep your quartz watch running with highly reliable accuracy every day.
Casio
AQ-230GA-9DMQYES
Ref. AQ230GA9DMQYES
Watch details and strap advice
- Case height
- 8.15 mm
- Case material
- Resin / Plastic
- Water resistance
- 30 m
- Movement
- Quartz
- Dial
- Yellow
The Casio AQ-230GA-9DMQYES takes a 20 mm strap: measure between the lugs and that is the only number you need. We list 37 straps in that width. With 30 m of water resistance, a strap of medium thickness keeps the balance. Quartz movement. Most straps here come with quick-release spring bars, so the swap takes a minute and no tool.
Straps by lug width (20 mm) 37
All 37 20 mm strapsWidth is a starting point. Check the case and end fittings before choosing.
-
Heritage CuffLeather€27.90 -
Slim Colour LeatherLeather€24.90 -
Rivet RallyLeather€49.90 -
Dense Mesh SteelSteel€34.90 -
Diagonal WeaveNylon€24.90 -
Regatta StripeNylon€22.90 -
Ladder Link SteelSteel€39.90 -
Camouflage Five RingNylon€27.90 -
Square Slot SiliconeSilicone€22.90 -
Air Sport SiliconeSiliconeAs low as €22.90 -
Vintage RallyLeather€34.90 -
Denim StitchNylon€22.90
Read before you choose
All stories
Tutorial 6 min read
Omega Speedmaster watch strap guide
One black dial, four different directions. Explore suede, nylon, rubber and woven straps, starting with the 20 mm lugs of a specific Moonwatch reference.
History 3 min read
Strap guide for the Rolex Datejust 36
Learn how to choose the correct strap for your Rolex Datejust 36 by understanding its case dimensions, lug width, and different material options.