Phylida 300M Green Diver Automatic Watch – NH35

Phylida 300M Green Diver Automatic Watch – NH35 | Sapphire Crystal | BGW9 Ceramic Bezel | 40mm

Green is the colour that transformed the modern dive watch market. From the moment it became associated with one of the most recognised submariner references in watch collecting, every serious dive watch buyer developed an opinion about green dials — and most of those opinions are positive. The Phylida 300M Green Diver earns its place in that conversation with the specification to back up the aesthetics: a Seiko NH35 automatic movement with hacking and hand-winding, a sapphire crystal, a 120-click unidirectional ceramic bezel with BGW9 lume in the pip and markers, and a genuine 300M water resistance rating in a solid 316L stainless steel case and bracelet. At 40mm with a 48mm lug-to-lug and 13.7mm thickness, it sits at the compact modern diver sweet spot — proportionate, wearable, and deeply capable.

Browse the complete Phylida watches collection at JwlrAddicts or read the Phylida watches guide for a full model comparison.

The Green Dial and Matching Ceramic Bezel

The Phylida 300M Green uses the classic submariner dial layout — round lume-filled hour plots, applied rectangular indices at 3, 6, and 9, date window at 3 o’clock, and sword-style hands — all in a unified green tone where the dial and ceramic bezel read as a single continuous colour statement rather than a colour accent against a contrasting surface. The green ceramic bezel insert carries its colour in the ceramic material itself, not as a surface coating, making it essentially immune to the fading and scratching that affects lesser bezel materials. The BGW9 blue lume fills the bezel pip, hour markers, and hands — a detail worth noting specifically because it means the bezel alignment triangle glows blue-distinctly in darkness, making it easier to read elapsed dive time than a non-lumed pip would allow. In total darkness, as shown in the product lume shot, the watch achieves the full blue-glow CGW9 effect across every luminous element.

Key Features

• Seiko NH35 automatic movement — hacking, hand-winding, 41-hour power reserve
• 300M / 30 ATM water resistance — professional dive specification
• Sapphire crystal — scratch-resistant, lasting optical clarity
• 120-click ceramic unidirectional bezel — BGW9 lume pip, green ceramic insert
• BGW9 blue lume — hands, all indices, and bezel pip
• Green sunburst dial — round lume plots, date window at 3 o’clock
• 40mm 316L stainless steel case — 13.7mm thickness, 48mm lug-to-lug
• Solid 316L stainless steel bracelet — brushed and polished finish
• Screw-down crown and screwback caseback — full sealing integrity
• 20mm lug width — standard, compatible with any aftermarket strap

Specifications

BGW9 on the Bezel — Why It Matters Underwater

Most dive watches with lumed bezels confine the lume to the pip only — the single triangle marker at 12 o’clock that establishes the dive start reference. The Phylida 300M Green carries BGW9 lume in both the pip and the bezel minute markers, meaning the elapsed time scale remains readable in total darkness at depth, not just the reference point. The choice of BGW9 specifically — which emits blue light — creates a clear contrast against the green ceramic bezel surface, making the luminous markers more legible against their own background than green-on-green lume would allow. In the lume shot, the full bezel and dial layout glows with the characteristic cool blue of BGW9 across every luminous element, confirming the completeness of the lume coverage.

40mm and 300M — The Compact Professional Specification

The combination of a 40mm case diameter and 300M water resistance is not common in the affordable dive watch market. Most watches at this specification run 41–43mm, and most 40mm watches are rated to 100–200M. The Phylida 300M Green achieves the professional depth rating in a case size that suits a wider range of wrists than larger divers — the 48mm lug-to-lug sits comfortably on wrists from about 6.5 inches upward, fits under a shirt cuff more easily than a 41+ mm watch, and wears proportionately on smaller wrists where a 43–45mm case would be overwhelming. For buyers who specifically want 300M capability without the size commitment of larger professional divers, the 40mm Green Diver is the correct answer in the Phylida range.

How It Fits the Phylida Dive Range

The 300M Green Diver extends the Phylida dive range to its deepest 300M rating at the most compact 40mm case size. The closest siblings share the ceramic bezel and sapphire specification: the Phylida SE-11 Diver at 200M and SE-11 Wave Dial both step up to 41mm with Miyota 8215 hacking. The Phylida PT5000 NTTD Diver covers black dial 200M with the PT5000 or Miyota movement choice. The Phylida Pepsi Bezel 200M offers the bicolour bezel alternative on a white dial. For buyers who want 500M professional specification, the Phylida 500M Deep Diver steps up in depth rating and case size.

For 300M green diver alternatives from other brands at JwlrAddicts, the SteelDive SD1954 Water Ghost offers an NH35-powered 300M diver at 41mm, and the Seagull Ocean Star 1207 delivers Seagull’s in-house movement at 300M in a larger format.

Frequently Asked Questions

What movement does the Phylida 300M Green Diver use? The Seiko NH35 — a Japanese automatic caliber manufactured by TMI (Seiko) with hacking, hand-winding, and a 41-hour power reserve. No battery required.

Is 300M water resistance sufficient for scuba diving? Yes. 300M / 30 ATM significantly exceeds the depth requirements for recreational scuba diving (typically rated to 40M maximum depth). It also meets the requirements for technical diving. The screw-down crown and screwback caseback maintain the sealing integrity that the 300M rating requires.

What is BGW9 lume and why is it on this bezel? BGW9 is a Swiss Super-LumiNova formulation that emits blue light in darkness. It is applied to the bezel pip and minute markers as well as the dial hands and indices, ensuring the entire elapsed time scale remains readable at depth in total darkness — not just the 12 o’clock reference pip.

Is the bezel ceramic? Yes — a 120-click unidirectional ceramic insert. The green colour is fired into the ceramic material rather than applied as a surface coating, making it essentially scratchproof and colour-stable over years of use.

How compact is the 40mm case in practice? At 40mm diameter, 13.7mm thickness, and 48mm lug-to-lug, the Green Diver wears as a compact modern professional diver. It suits wrists from approximately 6.5 inches upward and fits under a shirt cuff with minimal protrusion — smaller than most 300M-rated divers on the market.

Can I change the bracelet? Yes. The 20mm lug width is standard — any 20mm rubber, NATO, leather, or aftermarket steel strap fits without modification. A rubber or oyster-style strap in green or black would complement the dial colourway well.

1. 300m(30 ATM) water-resistant.
2. Full solid 316L stainless steel.
3. Scratch-resistant sapphire crystal.

Case size: 40mm
Thickness: 13.7mm
Lug to lug: 47.5mm
Movement: nh35
Dial window: Sapphire crystal
Bezel insert: 120 Clicks; unidirectional; ceramic with BGW9 lume
Crown: Screwdown crown
Caseback: Screwback case
Case material: Solid 316L stainless steel
Bracelet: Solid 316L stainless steel