New Releases · 2026-09-02

The SUB 300 returns in lightweight Grade 5 titanium

The SUB 300 Ti5 brings Grade 5 titanium to DOXA's classic cushion-shaped diving watch. Its patented decompression-scale bezel, orange minute hand and durable rubber

By Chronolume digest · Original English summary · Based on DOXA / September 2026 release coverage

DOXA 823.50.351.21, September 2026 release. jp.doxawatches.com ↗

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This is a sourced news summary, not a hands-on review. Read the original reporting at DOXA / September 2026 release coverage ↗

What to know

The SUB 300 Ti5 brings Grade 5 titanium to DOXA's classic cushion-shaped diving watch. Its patented decompression-scale bezel, orange minute hand and durable rubber strap retain the brand's unmistakable underwater identity.

The orange-dial SUB 300 Ti5 Professional worn on the wrist. DOXA / official product and press photography ↗

The 42.5-by-45mm titanium case measures 13.4mm thick and resists water to 300 metres. A COSC-certified Swiss automatic calibre supplies roughly 38 hours of power reserve. Announced in September ahead of October deliveries, the Ti5 emphasises material improvement over cosmetic novelty.