H. Moser & Cie. Streamliner Small Seconds Lime Green Enamel: Boutique Edition Brightens Integrated Steel

H. Moser & Cie. expands its integrated steel line with the Streamliner Small Seconds Lime Green Enamel Boutique Edition, combining an intense Grand Feu enamel dial with the ultrathin micro-rotor Calibre HMC 500.

When H. Moser & Cie. first trimmed down its integrated-bracelet architecture with the Streamliner Small Seconds in late 2023, the Schaffhausen-adjacent manufacture proved that its organic, fluid steel design could shrink to 39mm without losing a shred of visual presence. Handling the latest iteration at the brand’s boutique launch—the H. Moser & Cie. Streamliner Small Seconds Lime Green Enamel Boutique Edition (ref. 6500-1201)—it becomes immediately obvious that color and texture play as critical a role in this case silhouette as the brushed stainless steel itself.

The new release pairs the compact cushion-shaped case and supple single-link bracelet with a striking Grand Feu enamel dial finished in an electrifying lime green gradient. Available strictly through H. Moser & Cie. boutiques, this reference retains the ultrathin automatic micro-rotor Calibre HMC 500 while giving the understated Streamliner line one of its most energetic expressions yet.

An Intense Fumé Enamel Dial Crafted Through Fire

Seeing the Moser Streamliner Lime Green dial under direct lighting reveals a depth of field that plain lacquered or stamped dials simply cannot replicate. The process behind this vibrant surface starts with a solid gold dial plate, engraved with a fine pattern to create a textured, hand-hammered base. An enamel artisan then finely crushes three distinct color pigments, washing and applying them individually over the course of nearly an hour to build the brand’s signature fumé gradient.

Close-up detail of the hand-hammered Grand Feu lime green enamel dial on the Streamliner Small Seconds
The hand-hammered gold base beneath twelve firings of Grand Feu enamel creates an ever-shifting lime green fumé gradient.

The dial undergoes a rigorous series of 12 separate firings inside a high-temperature kiln. As the silica and oxides fuse, the enamel oxidizes to create a translucent, glass-like finish that fades seamlessly from a bright lime-and-turquoise center to deep emerald tones at the perimeter. Because each firing carries subtle thermal variations, no two dials in the production run are completely identical.

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In typical Moser fashion, minimalism reigns across the display. The brand dispenses with any printed logo or signature, allowing the luminous enamel field to occupy center stage. Applied steel hour markers line the outer edge, while three-dimensional hour and minute hands feature inserts crafted from Globolight—a ceramic-based material infused with Super-LumiNova. At 6 o’clock, a sunken small-seconds sub-dial featuring a fine snailed pattern breaks up the hammered texture, offering a crisp visual anchor.

39mm Cushion Case and Integrated Ergonomics

On the wrist, the 39mm stainless steel case sits with remarkable balance. Measuring 10.9mm thick including the slightly domed sapphire crystal—and just 9.3mm without it—the watch slides easily under a shirt cuff while retaining the solid tactile weight expected from an integrated steel sports model. The case architecture dispenses with traditional lugs entirely, sweeping directly into the articulated single-link steel bracelet.

Side profile and integrated steel bracelet of the H. Moser & Cie. Streamliner 39mm case
The fluid single-link bracelet transitions seamlessly into the 39mm cushion case with alternating vertical-brushed and polished bevels.

Drawing aesthetic cues from the high-speed aerodynamic trains of the 1920s, the Streamliner case features a radial sunray brush on its upper bezel face, framed by polished chamfers along the flank. The integrated bracelet links contour around the wrist with exceptional flexibility, secured by a three-blade folding clasp equipped with an engraved Moser logo and a tool-free micro-adjustment mechanism. Unlike many high-concept dress pieces, the case remains fully functional for daily wear, boasting a robust water resistance rating of 120 meters (12 ATM) backed by a screw-down crown engraved with the brand’s signature ‘M’. Inspecting modern watchmaking materials highlights how steel, when finished with this degree of hand craftsmanship, continues to rival modern high-tech composites.

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Calibre HMC 500: The Micro-Rotor Engineering

Turning the piece over reveals the sapphire display caseback and the open-worked architecture of the Manufacture Calibre HMC 500. Designed specifically for smaller case footprints, this automatic movement measures 30mm in diameter and a remarkably slim 4.5mm in height. To maintain a low profile without sacrificing winding efficiency, Moser engineers incorporated a solid platinum micro-rotor mounted on ball bearings, driving a bidirectional pawl winding system.

Sapphire caseback revealing the calibre HMC 500 micro-rotor automatic movement
The partially skeletonized Calibre HMC 500 utilizes a solid platinum micro-rotor and delivers a 74-hour power reserve.

Operating at 21,600 vibrations per hour (3 Hz), the 26-jewel movement utilizes an Original Straumann Hairspring produced in-house by Moser’s sister company, Precision Engineering AG. The movement delivers a minimum power reserve of 74 hours on a full wind. Dark anthracite finishing, Moser double-stripe bridge decorations, and hand-beveled edges give the caliber a modern, architectural aesthetic that contrasts beautifully with the warm gold tones of the platinum winding weight. Exploring automatic micro-rotor mechanisms demonstrates how off-center winding weights allow watchmakers to achieve slim case heights while keeping the movement fully visible.

Boutique Exclusivity and Availability

In recent years, Moser has expanded its global retail footprint, and this reference serves as a celebration of that growing presence. The Streamliner Small Seconds Lime Green Enamel is designated as a Boutique Edition, available strictly through the brand’s nine standalone boutiques worldwide—including locations in Shanghai, Hong Kong, Seoul, Singapore, New Delhi, and the newly launched Chicago boutique. Compared to dark stealth pieces like the H. Moser Streamliner ceramic edition, this reference brings vivid artistic handcraft into everyday wearable proportions.

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On-wrist shot of the Streamliner Small Seconds Lime Green Enamel Boutique Edition
On the wrist, the lime green Grand Feu enamel dial shifts dynamic hues depending on ambient light.

Priced at CHF 30,900 (excluding VAT), the reference 6500-1201 represents a masterful synthesis of traditional Grand Feu enameling and 21st-century micro-rotor watchmaking. For full ordering details and boutique availability, consult the official H. Moser & Cie. product page or read further industry coverage on aBlogtoWatch.

Specifications

Reference 6500-1201
Collection Streamliner Small Seconds
Case Material Stainless steel, sunray brushed and polished finish
Case Dimensions 39.0mm diameter, 10.9mm thickness (9.3mm without crystal)
Crystal Slightly domed sapphire crystal
Caseback See-through sapphire crystal display back
Water Resistance 120 meters / 12 ATM (screw-down crown with ‘M’ motif)
Dial Lime Green fumé Grand Feu enamel on hand-hammered gold base
Hands & Markers Applied steel indices, Globolight 3D lume inserts on hour and minute hands
Movement In-house Calibre HMC 500 automatic micro-rotor
Functions Central hours and minutes, small seconds at 6 o’clock
Power Reserve 74 hours minimum
Winding System Bi-directional pawl winding with solid platinum micro-rotor
Frequency 21,600 vph (3 Hz) with Original Straumann Hairspring
Bracelet Integrated stainless steel with 3-blade micro-adjustable folding clasp
Availability Exclusive to H. Moser & Cie. Boutiques
Price CHF 30,900 (excl. VAT) / approx. $38,200 USD
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Kukuh Nova Putra

Starting with a digital Casio at age seven, I now explore mechanical horology as the Founder of Horologyne.com and Director of NesiaWatches.com.

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