Seagull ST1908 Moon Phase Chronograph – Sapphire

Seagull ST1908 Mechanical Chronograph – Moon Phase & Sapphire Crystal

Experience traditional mechanical watchmaking through a hand-wound chronograph built around the renowned Seagull ST1908 movement.

This Mechanical Moon Phase Chronograph combines a Seagull ST1908 hand-wound movement with swan-neck regulation, a 316L stainless steel case, sapphire crystal and genuine mechanical chronograph functions.

Its multi-layered pilot-inspired dial brings together chronograph subdials, date display, moon phase indication and a stepless bidirectional bezel, creating a sophisticated mechanical watch with strong wrist presence.

⚙️ Seagull ST1908 Hand-Wound Mechanical Movement

At the heart of the watch is the Seagull ST1908 mechanical hand-wound movement.

Unlike an automatic or quartz watch, this movement is manually wound through the crown, making winding the watch part of the traditional mechanical ownership experience.

No battery is required to power the mechanical movement.

🦢 Swan-Neck Regulation

The ST1908 incorporates a swan-neck regulation system, one of the movement's most visually distinctive mechanical details.

This fine-regulation mechanism reinforces the traditional watchmaking character of the movement and makes the mechanical architecture itself an important part of the watch's appeal.

⏱️ Mechanical Chronograph

Dedicated pushers on the side of the case operate the chronograph mechanism.

The dial incorporates separate indications for chronograph seconds and chronograph minutes, allowing elapsed time to be measured mechanically.

This is not simply a decorative multi-subdial design — the chronograph is one of the watch's central complications.

🌙 Moon Phase Display

A moon phase display positioned at 6 o'clock adds another distinctive complication to the dial.

The celestial display contrasts beautifully with the technical chronograph layout, creating a watch that combines mechanical instrumentation with a more traditional watchmaking aesthetic.

📅 Date & Multi-Function Dial

The dial integrates several indications without sacrificing its symmetrical appearance.

Its functions include:

• Mechanical chronograph
• Chronograph minute subdial
• Running seconds subdial
• Date subdial
• Moon phase display
• Luminous details

The combination gives the watch the appearance and functionality of a traditional complicated mechanical chronograph.

🔄 Stepless Bidirectional Bezel

The watch also features a stepless bidirectional rotating bezel.

Unlike a conventional indexed click bezel, it can rotate smoothly in either direction, complementing the pilot-inspired instrument design.

💎 Sapphire Crystal

The dial is protected by sapphire crystal, a premium material prized in watchmaking for its excellent scratch resistance.

It provides a clear view of the detailed dial while offering a significant upgrade over standard mineral or Hardlex-style crystals.

🔩 316L Stainless Steel Case

The 43 mm (1.69 in) case is constructed from 316L stainless steel, combining durability with a refined metallic finish.

At 13 mm (0.51 in) thick and weighing approximately 99 g (3.49 oz / 0.22 lb), the watch maintains substantial wrist presence without the extreme weight of some oversized mechanical models.

🐄 Genuine Cowhide Leather Strap

The case is paired with a cowhide leather strap that reinforces the classic pilot and chronograph aesthetic.

The lug/strap width measures 22 mm (0.87 in), while the watch measures 51.5 mm (2.03 in) from lug to lug.

A butterfly-style clasp provides a clean and secure closure.

📏 Dimensions & Weight

• Case diameter: 43 mm (1.69 in)
• Case thickness: 13 mm (0.51 in)
• Lug-to-lug: 51.5 mm (2.03 in)
• Lug / strap width: 22 mm (0.87 in)
• Strap length: 20 cm (7.87 in)
• Weight: 99 g (3.49 oz / 0.22 lb)

💧 3 ATM Water Resistance

The watch is rated to 3 BAR / 3 ATM (30 m / 98.4 ft) of static water pressure.

This level is appropriate for incidental everyday splashes. Swimming, showering and diving are not recommended.

30 m (98.4 ft) represents a laboratory pressure-equivalent rating and should not be interpreted as a safe diving depth.

🎨 Five Distinctive Variants

The model is available in five combinations:

SS Teal Blue – stainless steel case with teal-blue dial
SS Black – stainless steel case with black dial
SS Salmon – stainless steel case with salmon dial
RG Salmon – rose-gold-tone case with salmon dial
RG Black – rose-gold-tone case with black dial

⚙️ Specifications

• Movement: Seagull ST1908
• Movement type: Mechanical Hand-Wound
• Regulation: Swan-Neck
• Chronograph: Yes
• Moon phase: Yes
• Date display: Yes
• Running seconds: Yes
• Bezel: Stepless Bidirectional
• Case material: 316L Stainless Steel
• Crystal: Sapphire Crystal
• Case diameter: 43 mm (1.69 in)
• Case thickness: 13 mm (0.51 in)
• Lug-to-lug: 51.5 mm (2.03 in)
• Lug width: 22 mm (0.87 in)
• Strap length: 20 cm (7.87 in)
• Weight: 99 g (3.49 oz / 0.22 lb)
• Strap: Cowhide Leather
• Clasp: Butterfly-Style Clasp
• Water resistance: 3 BAR / 3 ATM (30 m / 98.4 ft pressure equivalent)
• Display: Analog
• Case shape: Round
• Variants: SS Teal Blue, SS Black, SS Salmon, RG Salmon, RG Black

🎁 Traditional Mechanical Watchmaking with Multiple Complications

The combination of a 43 mm (1.69 in) 316L stainless steel case, 99 g (3.49 oz / 0.22 lb) construction, sapphire crystal and Seagull ST1908 hand-wound chronograph movement gives this watch a distinctly mechanical character.

Its chronograph, moon phase display, date indication, swan-neck regulation and rotating bezel make it particularly appealing to enthusiasts who want to interact with and appreciate the mechanics of their watch rather than simply read the time.