Doxa SUB 600T

Introduction

When Doxa resurrected the SUB 600T in 2019, it wasn’t just another reissue. It was a statement: the brand that defined the modern dive watch in the 1960s was reclaiming its throne. The 600T sits between the vintage-inspired SUB 200 and the professional-grade SUB 300, offering a sweet spot of 42.5mm case, 600m water resistance, and that unmistakable orange dial. But in a market flooded with microbrand divers and heritage homages, does the 600T still command attention? We strapped it on, took it to the pool, and wore it through a week of city life to find out.

The reference 862.10.351.21-N is the classic ‘Professional’ orange dial on a beads-of-rice bracelet – the look that made Doxa famous among divers and collectors alike. With a Sellita SW200-1 movement, a unidirectional bezel that clicks with authority, and a case that wears surprisingly slim for its specs, the 600T is a tool watch that doesn’t scream for attention – it earns it. But at nearly $2,500 retail, it faces stiff competition from Tudor, Oris, and even Seiko. Let’s dive in.

Manufacture History

Doxa was founded in 1889 in Le Locle, Switzerland, and initially produced pocket watches and dress watches. The brand’s true identity was forged in the 1960s with the launch of the SUB 300, the first dive watch to feature a decompression bezel. This innovation, combined with a bright orange dial for maximum underwater visibility, made Doxa the go-to watch for professional divers, including Jacques Cousteau’s team. The SUB 300T followed, and Doxa became a cult favorite among watch enthusiasts. After a period of decline and acquisition, the brand was revived in the 2000s and now produces modern interpretations of its classic dive watches, including the SUB 600T, which pays homage to the 1970s model of the same name.

Movement

Inside the SUB 600T beats the Sellita SW200-1, a Swiss automatic movement based on the ETA 2824-2. It’s a workhorse caliber with 26 jewels, a frequency of 28,800 vph (4 Hz), and a power reserve of 38 hours. While not chronometer-certified, Doxa regulates each movement in-house to -4/+6 seconds per day. The rotor is decorated with circular Geneva stripes, and the bridges have perlage finishing – not haute horlogerie, but clean and functional. The SW200-1 is easy to service and parts are widely available, making it a practical choice for a tool watch.

Specifications

• Case diameter: 42.5mm
• Case thickness: 14.5mm
• Lug-to-lug: 48mm
• Case material: 316L stainless steel
• Crystal: Domed sapphire with double anti-reflective coating
• Water resistance: 600m (2000ft)
• Lume: Super-LumiNova X1 on hands and indices
• Bracelet/Strap: Beads-of-rice stainless steel bracelet with folding clasp
• Clasp type: Folding clasp with diver’s extension

Wrist Feel

The 42.5mm case wears closer to a 40mm thanks to the short 48mm lug-to-lug and the curved lugs that hug the wrist. The beads-of-rice bracelet is supple and doesn’t pinch hair, though the clasp is a bit chunky. At 14.5mm thick, it’s not a thin watch, but the weight is well-distributed – 170g on bracelet. The orange dial pops under any light, and the domed sapphire crystal adds a vintage touch without distorting legibility. On a NATO or rubber strap, it becomes a true tool watch; on the bracelet, it’s a weekend statement.

Accuracy

Out of the box, our test sample ran +5 seconds per day on the wrist, with +8 seconds when left crown-up overnight. That’s solid for a non-COSC movement. After a week of mixed wear, it averaged +6 s/d – well within Doxa’s claimed regulation. The SW200-1 is easy to service, and accuracy should remain stable for years between services.

Occasions

The SUB 600T is a versatile diver that works for sport, daily wear, and travel. Its 600m water resistance makes it overkill for most swimming, but the bold orange dial and robust build mean it’s equally at home on a boat, at a desk, or on a weekend getaway. It’s not a dress watch, but it can pass in casual business settings if you’re confident enough.

Wrist Presence

4/5 – The orange dial and bold bezel grab attention without being gaudy. It’s a conversation starter, especially among watch enthusiasts who recognize the Doxa heritage.

Reference Variants

The SUB 600T is available in four dial colors: Orange (Professional), Black (Sharkhunter), Silver (Caribbean), and Blue (Aquamarine). All come on the beads-of-rice bracelet or a rubber strap. The orange is the most iconic, but the black is more versatile. The silver and blue are rarer and appeal to collectors.

Family References

The SUB 600T sits between the SUB 200 (200m WR, 40mm) and the SUB 300 (300m WR, 42.5mm). The SUB 1200T and SUB 1500T offer higher water resistance for serious divers.

Other Notable Models by Doxa

Doxa also produces the SUB 300T (a modern take on the original), the SUB 200 (vintage-inspired 40mm), and the SUB 1200T (1200m WR). The brand also offers the CARBON series and limited editions.

Similar Watches

• Tudor Black Bay 58 – Similar size and dive heritage, but Tudor uses an in-house movement and has a more vintage aesthetic.
• Oris Aquis Date – Comparable water resistance and price point, with a more modern case design and a date window at 6.
• Seiko Prospex SPB143 – A 1965 reissue with similar tool-watch ethos, but at half the price and with a 200m rating.

Homages

• Steeldive SD1970 – $150 – A direct homage to the Doxa SUB 300/600T with orange dial and beads-of-rice bracelet, but with a Seiko NH35 movement and 300m WR.
• Addiesdive Doxa-style diver – $80 – Budget-friendly homage with similar orange dial and bezel, but mineral crystal and lower build quality.

Investment Value

The SUB 600T retails for $2,490. Pre-owned prices range from $1,800 to $2,200, depending on condition and box/papers. The trend is stable – not appreciating, but not depreciating rapidly. It’s a watch to buy for enjoyment, not speculation. No major auction history.

Service Interval

Every 5 years, a full service costs approximately $350. The movement is widely serviceable by independent watchmakers, though Doxa recommends their Swiss service center for authenticity.

Pros and Cons

Pros: Iconic orange dial, 600m water resistance, comfortable bracelet, sapphire crystal, strong heritage.

Cons: Sellita movement lacks prestige, bulky clasp, thickness may be an issue for some, price close to Tudor.

Final Verdict

The Doxa SUB 600T is a faithful reissue that captures the spirit of the original while delivering modern reliability. It’s a tool watch that looks good in the boardroom and on the boat, but it’s not for everyone – the orange dial is a love-it-or-hate-it affair. If you want a dive watch with character and a story, the 600T delivers. Just be prepared to answer ‘Is that a Doxa?’ at every watch meetup.