Depthmaster Blue, a 39 mm midnight blue dive watch limited to 100 pieces
The Depthmaster Blue is a 39 mm cushion-case dive watch with a midnight blue gradient dial, a 120-click ceramic bezel and a Swiss Soprod P024 automatic movement, water resistant to 1,000 m. Nivada Grenchen made it as a limited edition of 100 pieces, and it now has its place in the Retrospective of our limited editions.
The midnight blue dial has a matte gradient texture that moves from light to deep blue. Square and rectangular indexes and a triangle at 12 o’clock follow the codes of classic dive watches, and they are filled with luminous material for reading in the dark.
The Depthmaster family first appeared in the 1960s and is known among collectors by its “Pac-Man” nickname. Discover the full family in our Depthmaster collection.
The unidirectional bezel is ceramic, turns in 120 clicks and carries a 15-minute scale for tracking elapsed time. The screw-down caseback and crown keep water out, and the automatic helium escape valve supports long saturation dives.
The watch is water resistant to 100 ATM, or 1,000 m. Read our dive watch essentials to learn how each feature works.
Case
39 mm cushion case, 316L stainless steel, 47 mm lug to lug, 13 mm thick
Glass
Flat sapphire crystal
Dial
Midnight blue matte gradient dial, square and rectangular luminous indexes
Movement
Soprod P024 Swiss automatic, 28,800 vph, about 38 h power reserve, no date
Bezel
Unidirectional ceramic, 120 clicks, 15-minute scale
Water resistance
1,000 m / 100 ATM, screw-down caseback and crown, automatic helium escape valve
Strap
Dark blue Tropic rubber strap, 20 mm
The cushion-shaped case is 316L stainless steel, 39 mm across, 47 mm from lug to lug and 13 mm thick, under a flat sapphire crystal. Inside is the Swiss Soprod P024, a self-winding movement beating at 28,800 vibrations per hour (4 Hz), with a power reserve of about 38 hours and no date.
Wondering about the size? Our guide to 38 and 39 mm dive watches can help.
FAQs
A dive watch is built to be worn underwater: high water resistance, a screw-down crown, a rotating bezel to time the dive and a legible, luminous dial. The Depthmaster Blue is water resistant to 1,000 m.
Before you dive, turn the bezel until its triangle lines up with the minute hand. The minute hand then shows the elapsed minutes on the bezel scale. On the Depthmaster Blue, the ceramic bezel turns in 120 clicks and has a 15-minute scale.
The rotating bezel lets a diver time a dive at a glance. On a dive watch like the Depthmaster Blue, it turns in one direction only, so an accidental knock can only show more elapsed time, never less.
