The Hamilton Jazzmaster Skeleton Lady Auto is a 36 mm Swiss automatic watch that combines the restrained proportions of the Jazzmaster collection with a highly open-worked dial. Its defining feature is the Hamilton H-10-S skeletonized automatic movement, deliberately exposed from the front so that the hairspring, escapement and barrel become part of the watch’s visual architecture.
With an extended 80-hour power reserve, sapphire crystal and stainless-steel construction, the model offers considerably more than decorative skeletonization. It is an interesting example of Hamilton applying contemporary mechanical technology to an elegant format designed around compact proportions and visible mechanics.
Design
The Hamilton Jazzmaster Skeleton Lady Auto uses a round 36 mm stainless-steel case, giving the watch relatively compact proportions while leaving sufficient space for the complex open-worked dial. The exterior follows the polished and refined character associated with the Jazzmaster family, with conventional lugs and a slim fixed bezel that directs attention toward the dial rather than adding another decorative element.
The white dial is the dominant visual feature. Instead of adopting the small aperture normally associated with an open-heart watch, Hamilton removes substantial portions of the dial structure through flowing, asymmetrical cut-outs. These openings reveal the mechanical architecture beneath, including the hairspring, escapement and barrel. Applied polished hour markers and small black minute dots form a clearly defined peripheral scale, while the silver-tone hands extend across the exposed mechanical sections. The Hamilton signature remains positioned on one of the solid dial surfaces, preserving a recognizable visual anchor despite the extensive skeletonization.
A scratch-resistant sapphire crystal with anti-reflective treatment protects the dial and maintains a clear view of the movement. The watch is completed by a stainless-steel bracelet whose multiple narrow links complement the compact case and alternate visually between brighter and more subdued metallic surfaces. Hamilton specifies a folding clasp and Easy Click system for the bracelet, creating a cohesive all-steel configuration suited to the model’s refined character.
Case & Construction
The stainless-steel case measures 36 mm in diameter, 10.9 mm in thickness and 44 mm from lug to lug, with an 18 mm lug width. These dimensions place the Hamilton Jazzmaster Skeleton Lady Auto firmly within the more compact side of modern mechanical watches while still providing enough internal space for a full-sized automatic movement. The fixed steel bezel is deliberately narrow, maximizing the visible dial area within the round case.
Hamilton equips the model with sapphire crystal and anti-reflective treatment, while the rear uses an open caseback that provides a second view of the mechanical caliber. Water resistance is rated at (5 ATM), equivalent to 50 meters, making the construction appropriate for normal everyday exposure to water but not positioning the watch as a dedicated aquatic or diving instrument.
A conventional crown at 3 o’clock handles winding and time adjustment, preserving the clean profile expected from an elegant three-hand mechanical watch.
The stainless-steel bracelet connects to the case through the 18 mm lug spacing and is secured by a butterfly folding clasp with push-buttons, creating a clean appearance when closed while providing secure and practical operation. This construction complements the compact 36 mm case and maintains the refined character of the Jazzmaster collection.
Movement
Inside this Hamilton Jazzmaster Skeleton Lady Auto is the Hamilton H-10-S, a Swiss-made automatic mechanical caliber specifically configured for the brand’s skeleton watches. Automatic winding uses the motion of the wearer’s wrist to rotate an internal oscillating weight, transferring energy to the mainspring and replenishing the movement during normal wear. Hamilton specifies an extended 80-hour power reserve, allowing the watch to remain running for more than 3 days after being fully wound.
Technical references identify the H-10-S as an ETA C07-series-derived caliber with 25 jewels and a frequency of 21,600 vibrations per hour, or (3 Hz). The lower operating frequency contributes to the extended autonomy compared with many traditional Swiss automatic movements operating at 28,800 vph. The caliber is configured for hours, minutes and central seconds, without a date mechanism interrupting the skeletonized display.
Hamilton also specifies a Nivachron balance spring for the H-10-S caliber. This alloy is designed to reduce the effects of magnetic fields while also improving resistance to temperature variations and shocks. The skeletonized construction therefore combines visible mechanical operation with practical modern movement technology rather than serving a purely decorative purpose.
Functions & Complications
Functionally, the Hamilton Jazzmaster Skeleton Lady Auto remains intentionally straightforward. The H-10-S provides hours, minutes and central seconds, together with automatic winding. There is no date window, chronograph, GMT display or other conventional complication, allowing the open-worked dial and mechanical components to remain the primary focus.
The skeletonized construction itself is best considered a movement and display architecture rather than a complication in the traditional horological sense. Hamilton uses it to expose functional elements including the hairspring, escapement and barrel from the dial side, allowing their operation to be observed while the watch performs its basic timekeeping functions.
Performance
At 36 mm in diameter and 10.9 mm thick, the Hamilton Jazzmaster Skeleton Lady Auto offers compact proportions that should work particularly well on smaller wrists. The multi-link steel bracelet also allows the watch to articulate naturally around the wrist, while the folding clasp maintains the integrated appearance of the bracelet.
Legibility inevitably requires some compromise because the open-worked dial creates a more visually complex background than a conventional solid dial. Hamilton addresses this with polished hands, applied markers and a clearly separated peripheral minute track. The sapphire crystal and anti-reflective treatment further assist visibility in changing lighting conditions.
The 80-hour reserve is especially useful in everyday ownership, as the watch can remain unworn for several days without immediately stopping. Combined with 50-meter water resistance and the Nivachron-equipped automatic caliber, this watch is well suited to everyday and dress-oriented use, although its construction is not intended for demanding aquatic activities.
Technical Data
Brand: Hamilton Watches;
Model: Hamilton Jazzmaster Skeleton Lady Auto (Ref. H32405111);
Year: 2019;
Case Material: Stainless Steel;
Case Diameter: 36 mm;
Case Thickness: 10.9 mm;
Lug Width: 18 mm;
Lug-to-Lug: 44.0 mm;
Crystal: Sapphire Crystal with Anti-Reflective Treatment;
Water Resistance: 50 m / 164 ft (5 ATM);
Power Reserve: 80 Hours;
Movement: Automatic Mechanical Watches – Hamilton Calibre H-10-S (Swiss Movement);
Functions: Hours, Minutes, Central Seconds, Automatic Winding;
Complications: None;
Bracelet / Strap: Stainless Steel Bracelet / Butterfly Folding Clasp with Push-Buttons;;
Type: Casual Watches, Classic Watches, Dress Watches, Luxury Watches, Skeleton Watches;
Sex: Women’s Watches;
Nationality: Swiss Watches.
Retail Price (Launch): ~€1,365 / ~$1,475.
The Hamilton Jazzmaster Skeleton Lady Auto represents the more mechanically expressive side of the Jazzmaster collection. Its significance comes from adapting skeleton watchmaking to a compact 36 mm format without abandoning the practical qualities expected from a contemporary Swiss automatic watch. The H-10-S caliber, 80-hour power reserve, Nivachron balance spring, sapphire crystal and exhibition caseback give the model credible technical substance, while the extensively cut-out white dial establishes its distinctive identity.
For wearers interested in visible mechanics but looking for proportions and styling closer to an elegant dress watch than a large contemporary skeleton model, this model offers a particularly balanced interpretation of Hamilton’s mechanical design language.
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