Doxa Sub 300: Reference Guide & Specs

Key Points from the Discussion

• The Doxa 300 and 300T differ in depth rating, movement certification, and the presence of a helium escape valve. The 300 is rated to 980ft with a COSC-certified movement and no HEV, while the 300T is rated to 1200ft with an uncertified movement and an HEV. The Doxa Army shares the 300's depth rating but has an uncertified movement and an HEV.
• The Doxa 300T typically has a lower retail price than the Doxa 300, likely due to differences in their movements, despite some models sharing similar accuracy.
• While the orange dial is iconic and most associated with Doxa, the brand offers a diverse catalog including silver, black, blue, Tiffany-colored, yellow, and white dial variants.
• Some collectors prioritize modern dive computers like Suunto for detailed underwater data, highlighting a different approach to dive instrumentation compared to traditional mechanical dive watches.
• The inclusion of a helium release valve on the Doxa 300T is noted as a feature that, while technically advanced, is often unnecessary for most recreational divers.