Doxa SUB 300 SUB 300T Aquamarine

Reference 840.10.241.25

About this watch

The Doxa SUB 300T Aquamarine is a statement piece that combines functionality, style, and rich history. This Swiss watchmaker's exceptional diving watches since the 1880s have earned a solid reputation among collectors. The SUB family of watches is celebrated for its robust features designed specifically for underwater exploration. At the core of the SUB 300T is the reliable ETA caliber 2824-2 automatic movement, featuring a frequency of 28,800 vibrations per hour and a power reserve of 42 hours. The watch's captivating aquamarine color reflects the depths of the ocean, while its matte finish gives it a modern edge. The dial features stick and dot indexes for readability in various conditions, complemented by stick hands. A date function is strategically placed without cluttering the dial. The rotating bezel ranges from 0 to 60, adding to the watch's rugged aesthetic. Crafted from sapphire glass, this timepiece strikes a balance between presence and wearability.
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Key Features

  • Swiss-made Doxa watch
  • Exceptional water resistance (1200m)
  • Reliable ETA 2824-2 automatic movement
  • Striking aquamarine color
  • Durable sapphire glass
  • Robust design for underwater exploration

Specifications

Brand
Doxa
Family
SUB 300
Model
SUB 300T Aquamarine
Reference
840.10.241.25
Movement
2824-2
Movement Features
  • Hours, Minutes, Seconds
  • Date
Case
Stainless Steel 42.5mm
Dial Color
Blue
Crystal
Sapphire
Water Resistance
1200

Current Listings

[WTS] Doxa Sub 300T Caribbean

Doxa Sub 300T Caribbean

Doxa - Sub 300T · $1,250
A Doxa Sub 300T with a Caribbean dial, featuring a 2021 warranty dated card and full kit.

  • Condition: Great condition with minor scuffs
  • Warranty Valid Until: 2021
  • Strap Size: perfectly sized for a 6.75 inch wrist
  • Adjuster On Clasp: yes
Posted at
Nov 4, 2025, 12:55 PM
Active
[WTS] Doxa SUB 300 Great White Topper Edition, $2600

Doxa SUB 300 Great White Topper Edition, $2600

Up for sale is my Doxa Great White Topper Edition, number 70 of 100. It has a lume dial and no date feature.

  • Condition: Excellent
  • Limited edition quantity: 100
  • Case size: 40mm diameter
  • Water resistance: 200m depth rating
Posted at
Oct 26, 2025, 11:27 PM
Active
[WTS] Doxa Sub 300 Professional

Doxa Sub 300 Professional

This Doxa Sub 300 Professional is a modern dive watch with vintage vibes, featuring a polished bezel and a Reddit favorite. It comes on a bracelet as well as an additional orange OEM strap and adjustable bracelet.

  • Condition: Excellent (94%)
  • Case size: 42mm diameter
  • Bracelet type: Stainless steel bracelet with clasp extension
  • Water resistance: 300m depth rating
Posted at
Oct 24, 2025, 8:51 AM
Active
[WTS] Doxa Sub 300 Carbon w full kit + extra strap

Doxa Sub 300 Carbon w full kit + extra strap

Doxa - Sub 300 Carbon · $3,500
This Doxa Sub 300 Carbon features a carbon case, 42.5mm case size, and a unique 'saturation' bezel for diving. It comes with two rubber straps and has a 2-year warranty.

  • Condition: Excellent, works great
  • Depth rating: 300m
  • Case size: 42.5mm
  • Lug to lug length: short fits small wrists
Posted at
Oct 23, 2025, 1:23 PM
Active