DOXA Sub 300β Aquamarine 830.10.241.20 on Strap
Double click for enlarge
Reference Number: 830.10.241.20

DOXA Sub 300β Aquamarine 830.10.241.20 on Strap

Availability: In Stock

This watch is in stock and ready to ship!

Multiple Financing Options

Finance your new timepiece, we offer two online (available in the payment selection during check out) and one in-store/over the phone financing options. Read more»


Global Shipping
We ship everywhere*
Authorized Dealers
Full Warranty

DOXA Sub 300β Aquamarine 830.10.241.20 on Strap

The SUB 300β sports watch combines functionality with style, maintaining foundational tool watch features in a redesigned 42.5 mm diameter case, now slimmer at 11.95 mm. The black ceramic bezel and screw-down crown enhance its sport-chic character, complemented by a sophisticated sunburst dial finish. Available with an FKM rubber strap or stainless-steel "Beads of Rice" bracelet, both featuring a ratcheting folding clasp, the watch is water-resistant up to 300 meters. With a scratch-resistant sapphire crystal, Swiss automatic movement, and a power reserve of around 38 hours, the SUB 300β is engineered for safety and exploration. True to DOXA's unconventional ethos, it blends the spirit of the times with an elegant, modern sport-chic look suitable for urban settings.

Watch Features

Estimated Shipping10 business days
CaseStainless steel
Case BackStainless steel, screw down case back
Case Length44.50mm
Case Width42.50mm
Case Thickness11.95mm
CrownScrew-down crown
CrystalSapphire Crystal
Dial ColorBlack, Sunray dial with stamped wave structure
Dial MarkersSuper‑LumiNova®
FunctionsHours, minutes, seconds, date, Unidirectional rotating bezel in ceramic (in meters), Helium release valve
MovementSwiss mechanical automatic, self-winding Power reserve 38 hours Frequency 28,800 vph (4.0 Hz) Decorated by DOXA
Water Resistance300m
Bracelet StrapFKM rubber strap
Clasp TypeFolding clasp with ratcheting wetsuit extension
Warranty2 Year

  • Our store is a brick and mortar store located in Naples, Florida.
  • We are Authorized Dealers of more than 40 Watch Brands.
  • Full Factory Warranty (1 to 5 years, for brand new watches only).
  • We ONLY sell 100% Original Watches.
  • We are specialist, 20+ years in the Watch Industry.
  • FREE* winder on purchases over $2,000.
  • FREE Insured Shipping for products over $1,000.
  • Global Shipping.
  • We are members of Jewelers of America.
  • Your information is safe, we don't store or share your information. We use 256 bit SSL technology to encrypt your data.
  • We are members of Better Business Bureau® A+++
  • We accept trades.
  • Click here check what our customers say.

Shipping Policy

US Shipping: FedEx 2-Day Delivery.


  • Orders over $1,000: Free
  • Orders under $1,000: $35
  • Optional: FedEx Overnight Shipping - additional charges apply.

International Shipping: FedEx (3 - 7 days)

Cost: Varies based on country. We will inform you of the shipping cost before purchase.

Insurance Guarantee

All watches are fully insured during transit until it is delivered to you, at no extra cost to you.

Trade your watch

Please fill out this form

By clicking »Get Your Quote« you agree to our Privacy Policy and Terms & Conditions.

Get an Immediate Response:

Call: (239) 227-2932
Text: (833) 236-8698
WhatsApp: (+1) 239-766-7793


Leave Us An Email:

By clicking Submit you agree to our Privacy Policy and Terms & Conditions.

Questions? We can help.