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Deep Blue Master 1000
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MovementAutomatic Seiko/SII NH35A
Diameter45.1 mm (52.2 mm lug-to-lug)
Thickness~15 mm
Water resistanceup to 1000 m (depending on version)
Helium valveYes, manual, at 10 o'clock
Deep Blue

Master 1000

The catalogue's flagship automatic diver, built for extreme depths at an affordable entry price

Model History

The Master 1000 was created as the most "serious" offering in Deep Blue's professional diving catalogue: a rugged satin-finished steel case, a 120-click unidirectional bezel and a helium valve at 10 o'clock, a feature that in dive watchmaking signals the ambition to serve technical diving with gas mixes too, rather than just the casual snorkeling most collector divers are actually destined for.

The name itself, "Master 1000", recalls the model's claimed water resistance, which across its various generations has ranged — depending on version and bezel fitted — between 300 and 1,000 meters: a figure well above what most "collector" divers in a comparable class offer, consistent with the technical positioning Deep Blue claims for the entire Master range.

Over time the model has been reissued across several generations (including a "Gen2" version with an updated case), while keeping its original layout: a legible dial with large luminescent markers, a minute hand often colored for quick reading while diving, and a choice between ceramic or two-tone aluminum bezels depending on the execution.

Technical Specifications

Movement
Automatic NH35A, 24 jewels, manual winding and hacking
Case
45.1 mm, brushed steel, ~15 mm thick
Crystal
Sapphire
Bezel
Unidirectional, 120 clicks, ceramic or aluminum insert
Water resistance
Up to 1000 m depending on execution
Helium valve
Manual, positioned at 10 o'clock
Power reserve
About 44 hours
Strap
Steel bracelet or rubber/nylon strap, 22 mm lug width

Main Executions

Master 1000, green ceramic bezelGreen dial, fully luminescent glossy bezelcurrent production
Master 1000, black/blue two-tone bezelAluminum insert, lume limited to 12 o'clockcurrent production
Master 1000 Gen2Updated case and proportions compared to the first generationlater generation
Fun Fact

Unlike many "collector" divers that fit a helium valve more as a stylistic nod to the big Swiss names, the Master 1000 offers it as a genuinely functional, manually operated component: a detail that, combined with the up-to-1000-meter rating claimed on some versions, makes the model an emblematic case of the "form follows function" approach Deep Blue claims for the whole brand.