Phylida AT150 40mm Automatic Watch – NH35A Hacking

Phylida AT150 40mm Automatic Watch – NH35A Hacking | Blue Vertical Stripe Dial | Double-Domed Sapphire

The Phylida AT150 series is the brand’s sport-elegant everyday automatic — a watch designed to occupy the space between a dedicated dive tool and a dress watch, performing convincingly in both contexts without looking out of place in either. The 40mm AT150 brings that platform to its most classically proportioned configuration: a blue vertical stripe dial with a fine guilloche-style column texture, applied arrow and baton indices, a minute-track printed on the dial’s outer edge, a date window at 3 o’clock, and blue lume on all hands and markers. Above it sits a double-domed sapphire crystal — curved upward with the characteristic profile that gives sport-elegant watches their visual depth. Below it, the Seiko NH35A with hacking and hand-winding provides the movement foundation. The 316L stainless steel case and solid bracelet with screw-down crown and screwback caseback complete a watch that is, at 100M water resistance, genuinely suited to every daily context.

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

The Vertical Stripe Dial — Texture That Elevates

The AT150’s dial uses a fine vertical column texture — narrow parallel lines running from 12 to 6 o’clock across the full dial surface, creating a fabric-like appearance that shifts between deep navy and lighter blue depending on the angle of light. This is not a sunburst treatment (which radiates outward from the centre) but a linear grain that reads differently from every direction — from straight-on it appears deep and even; from oblique angles individual lines catch highlights and the dial surface appears to ripple gently with the wrist’s movement. Combined with the outer minute track printed at the edge of the dial surface — a detail borrowed from sport-elegant design language — and the applied indices that throw small shadows across the textured surface, the AT150’s dial is one of the more visually sophisticated in the Phylida range despite presenting as a clean, simple design at first glance.

Key Features

• Seiko NH35A automatic movement — hacking seconds, hand-winding, 41-hour power reserve
• Double-domed sapphire crystal — curved profile, superior scratch resistance
• Blue vertical stripe dial — fine column texture, applied indices, minute track, date at 3 o’clock
• Blue lume — hands and all hour markers
• 40mm 316L stainless steel case — 14mm thickness, 48mm lug-to-lug
• Solid 316L stainless steel bracelet — high-quality solid links
• Screw-down crown and screwback caseback — 100M water resistance
• 20mm lug width — standard, compatible with any aftermarket strap
• Available in Sterile or Branded dial

Specifications

NH35A — The Upgrade That Matters

The AT150 uses the Seiko NH35A, which is the upgraded variant of the NH35 featuring the hacking function — the seconds hand stops when you pull the crown, enabling precise time-setting to the second. For an everyday watch worn to work, travel, and meetings, the ability to set the time to within a second of a reference rather than within thirty seconds is the difference between a watch you trust and one you approximate. The 41-hour power reserve means the AT150 still has running reserve on Monday morning after a weekend of not wearing it, and the hand-winding function allows you to bring a stationary watch back to life without wearing it. This is the combination — hacking, hand-winding, 41 hours — that makes the NH35A the reference standard for everyday automatic movements in this price tier.

Double-Domed Sapphire — Profile and Scratch Resistance Together

The double-domed sapphire crystal curves upward in two stages — an outer dome and an inner dome — creating a pronounced curved profile over the dial that adds visual height to the watch and the characteristic light distortion at the edge angles that flat sapphire cannot reproduce. The double-dome profile is associated with premium sport-elegant watches because it creates the visual impression of depth between the dial surface and the crystal face, making the indices and hands appear to float at different heights below the glass. Sapphire material ensures this curved crystal resists scratching from everyday contact: keys, surfaces, metal edges. The AT150’s double-domed sapphire provides both the correct aesthetic for the watch’s design language and the practical protection a daily wearer demands.

AT150 Range at JwlrAddicts — 38mm and 40mm

The Phylida AT150 series covers two case sizes at JwlrAddicts. The Phylida AQUA AT150 38mm is the compact 38mm variant available in multiple dial colours including green, Laurel Green, and others — the correct size for smaller wrists and buyers who prefer the proportions of vintage sport watches. This 40mm AT150 is the standard modern size variant — 2mm larger, otherwise sharing the same platform. Both use the NH35A movement, double-domed sapphire, solid steel bracelet, and 100M water resistance. Choose the 38mm for compact vintage-correct proportions; choose the 40mm for the contemporary standard men’s sport watch size.

For buyers comparing sport-elegant automatics at JwlrAddicts across brands, the Seagull 819.17 Bauhaus Automatic offers the ST2130 at 28,800 vph in a slimmer 10mm dress format, and the LOBINNI 16056 covers the Miyota 821A dress-casual position with an ornate dial aesthetic. Within the Phylida range, the Phylida SE-31 also uses the NH35A at 40mm with a clean black textured dial and hidden push-button clasp for a more understated alternative to the AT150’s sport-elegant character.

Who Is the AT150 40mm For?

The AT150 is for the buyer who wants one automatic that handles the full range of daily life — office, weekend, dinner, travel — without requiring a context-specific choice. The blue dial is the most universally appropriate colour in the sport-elegant automatic category: refined enough for formal settings, vibrant enough for casual wear, and deeply established as a collector-approved choice. The 40mm case is exactly the size that creates no discussion — not too small, not too large, appropriate for every wrist size from medium upward. The NH35A provides trusted mechanical reliability. The double-domed sapphire provides premium visual character. The solid bracelet provides daily durability. This is the watch that does not need to be justified.

Frequently Asked Questions

What movement does the Phylida AT150 40mm use? The Seiko NH35A — a Japanese automatic caliber with hacking seconds, hand-winding, and a 41-hour power reserve. Manufactured by TMI (Seiko’s movement division), no battery required.

What is the difference between this and the 38mm AT150? The 40mm AT150 is 2mm larger in case diameter — the same platform, same movement, same crystal and bracelet quality, scaled up to the contemporary standard men’s sport watch size. The 38mm is for buyers who prefer vintage-correct compact proportions.

Is the crystal double-domed sapphire? Yes. The double-domed profile curves upward in two stages, adding visual depth to the dial and the characteristic edge distortion of premium sport-elegant watch crystals. Sapphire material (Mohs 9) provides superior scratch resistance.

Can I swim with the AT150? Yes. At 100M / 10 ATM with a screw-down crown and screwback caseback it is rated for swimming, snorkeling, and active water sports.

What is the difference between Sterile and Branded dial? Sterile has no text on the dial — a clean, uninterrupted view of the vertical stripe surface. Branded carries the Phylida name. Both are identical in specifications.

Can I change the bracelet? Yes. The 20mm lug width is standard — any 20mm leather, NATO, rubber, or aftermarket steel strap fits without modification.

☑ 100m (10ATM) water-resistant.
☑ Double domed sapphire crystal.
☑ Screwdown crown and case back.
☑ 316L stainless steel case.
☑ Solid stainless steel bracelet.

Case size: 40mm
Thickness: 14mm
Lug to lug: 48mm
Lug width: 20 mm
Movement: NH35A automatic, hacking
Dial window: Double domed sapphire crystal
Crown: Screwdown crown
Caseback: Screwback case (Solid SS)
Case material: 316L Solid stainless steel
Bracelet: High quality solid stainless