Sugess SU1908 Series Chronograph Moonphase Watch — ST1908 Swanneck, Guilloché Dial, 40mm

Sugess SU1908 Series Chronograph Moonphase Watch — ST1908 Swanneck, Guilloché Dial, 40mm

The Sugess SU1908 series is a 40mm hand-wound mechanical chronograph and moonphase watch powered by the Seagull ST1908 with swanneck regulator, presenting a guilloché-textured multi-layer dial in four configurations. At 12mm total thickness it is the slimmest of the Sugess ST1908 models. Butterfly deployment clasp on genuine leather strap. Sapphire crystal, exhibition caseback, 50m water resistance.

Key Specifications

How SU1908 Differs from Other Sugess ST1908 Models

You now have four ST1908 chronograph moonphase pages. The distinguishing feature of each:

Choose SU1908 for the guilloché-textured dial and the most compact 12mm thickness in the ST1908 range.

Variants — Four Configurations

SU1908SBB — Silver case / black dial: A guilloché black dial on silver-tone case with leather strap. The concentric circle texture of the guilloché creates a fine radial pattern across the black field, visible under raking light as individual bright rings.

SU1908SWB — Silver case / white dial: A guilloché white or ivory dial on silver case. The guilloché texture on white creates the most visible pattern effect — each concentric ring catches light clearly against the bright field. The most formally legible configuration.

SU1908GBB — Gold case / black dial: Black guilloché dial on gold-tone or rose gold case. The warm gold hardware against the dark textured dial is the most formally opulent of the four.

SU1908GWB — Gold case / white dial: White guilloché dial on gold-tone case. The warmest palette — gold case, white textured dial, leather strap. A fully warm-tone formal dress chronograph character.

Guilloché Dial Texture

Guilloché is a decorative surface engraving technique — a repeated geometric pattern applied to the dial surface using a rose engine lathe or CNC equivalent. The SU1908 uses concentric circle guilloché — fine concentric rings radiating from the dial centre outward, creating a pattern that appears to shift between bright and dark as the viewing angle changes.

The guilloché texture interacts with the multiple sub-dials of the ST1908 layout (chronograph registers, moonphase aperture, date display) by providing a rich background that adds depth without competing with the functional dial information. At close viewing distance the pattern is clearly visible; at normal wearing distance the dial reads as a textured, deep surface rather than a flat painted face.

This is the dial characteristic that distinguishes the SU1908 from the S398-2 (plain coloured fumé dials) and the M199S (Roman numeral layout). For buyers who specifically want guilloché texture on the ST1908 chronograph moonphase, the SU1908 is the only option in the range.

12mm Thickness

At 12mm the SU1908 is the slimmest Sugess ST1908 model — the M199S is 14.5mm. The 2.5mm difference is perceptible in how the watch sits under a shirt cuff. For buyers who want the ST1908 complication set in the slimmest available case, the SU1908 is the correct choice.

Butterfly Deployment Clasp

The butterfly clasp folds in two stages — both fold inward when closed, creating a symmetrical double-wing closure with no exposed pin. This provides a cleaner strap profile and more even pressure distribution than a pin buckle, consistent with the formal dress watch character of the SU1908.

Moonphase Adjustment Warning

Do not operate the moonphase quick-set between 9:00 PM and 3:00 AM. The calendar mechanism is mid-advance during these hours and adjusting the moonphase risks gear damage. Set only during daytime hours.

Who Is the Sugess SU1908 For?

The SU1908 is built for:

• Guilloché dial buyers who want the concentric circle texture on the ST1908 chronograph moonphase — no other ST1908 page offers guilloché
• 12mm slim buyers who want the most compact ST1908 case thickness
• Gold/rose gold case buyers who want the guilloché texture in the warmest hardware option
• Butterfly clasp preference buyers who want the double-fold closure rather than a pin buckle

More from Jewelry Addicts

• Sugess M199S ST1908 Roman Numeral — Roman numeral dial, 40mm
• Sugess S398-2 ST1908 Coloured Dials — dark blue, salmon and white plain dials
• Sugess S468 Pilot ST1908 — pilot case with slide-rule bezel at 43mm
• Sugess S452 Moonphase — moonphase-only automatic at lower price
• Best Automatic Watches Under $200 — full roundup

Gold Case White Dial Model:

Gold Case Black Dial Model:

Silver Case Ivory Dial Model: