Duboule 1620 Multi-Function Calendar Watch
Complications Watch / Calendar Watch · Duboule (affiliated with the Bonheur group). This is a 'Mushroom Brand'—a label with a historical-sounding name created for mass-market internet sales and TV shopping channels.
Period: Modern Lifestyle/Homage (2000s-Present). It utilizes a design language often referred to as "Pseudo-Luxury," mimicking high-end Swiss complication aesthetics from the mid-20th century.
Type
Complications Watch / Calendar Watch
Brand
Duboule (affiliated with the Bonheur group). This is a 'Mushroom Brand'—a label with a historical-sounding name created for mass-market internet sales and TV shopping channels.
Movement
Chinese-made Automatic (Self-winding) movement, specifically a Seagull or Hangzhou multi-function caliber. It features day, date, month, and 24-hour/Sun-Moon indicators rather than a true chronograph. Power reserve approximately 36-40 hours.
Dimensions
Case Diameter: 42mm; Thickness: 14mm; Lug-to-Lug: 50mm; Lug Width: 22mm. It wears large and thick due to the complication module added to the base movement.
Description
This Duboule 1620 represents the 'maximalist' approach to affordable watchmaking. By packing four sub-dials and multiple pushers into a large, polished steel case, it aims to provide the visual complexity of a perpetual calendar chronograph at a fraction of the cost. The white dial and sun/moon indicator provide a classic horological aesthetic on the wrist.
Key Features
Quad-subdial layout, sun-moon 24-hour indicator at 6, and the external pushers located at 2, 4, 8, and 10 o'clock for individual complication adjustment.
Dial Description
White dial with concentric sub-dials. Complications include Month (12 o'clock), Day of week (9 o'clock), Date (3 o'clock), and a Sun/Moon phase indicator with a 24-hour hand (6 o'clock). Indices are applied silver-tone markers, and hands are leaf/lance style.
Case Material
Polished Stainless Steel (likely 316L) or Chrome-plated base metal. The finishing is high-polish across the bezel, lugs, and sides.
Crystal Type
Mineral glass (flat). It lacks AR coating and is prone to surface scratches compared to sapphire.
Bezel Details
Fixed, polished stainless steel bezel with a smooth finish. It lacks markings, as the tachymeter scale is printed on the inner rehaut/chapter ring of the dial.
Crown & Pushers
Large onion-style or knurled push-pull crown at 3 o'clock. Four pushers (two on each side) are used to quickly set the day, date, month, and 24-hour indicators. These are not chronograph pushers.
Bracelet or Strap
Burgundy/Brown alligator-embossed leather strap with matching stitching. Likely features a standard tang-style buckle or a simple deployant clasp.
Caseback Details
Likely an exhibition/display caseback held by screws or a screw-down ring, showing the decorated Chinese automatic movement and custom branded rotor.
Movement Type
Chinese-made Automatic (Self-winding) movement, specifically a Seagull or Hangzhou multi-function caliber. It features day, date, month, and 24-hour/Sun-Moon indicators rather than a true chronograph. Power reserve approximately 36-40 hours.
Water Resistance
Rated at 3 ATM / 30 Meters. This is strictly 'splash resistant.' It should not be worn while swimming or showering due to the non-screw-down pushers.
Origin & Provenance
China. While the name 'Duboule' suggests French or Swiss origin, the brand is part of the modern Chinese manufacturing industry targeting the 'affordable luxury' market.
Age Estimate
Circa 2005–2015. This specific style of multi-pusher calendar watch was very popular on sites like eBay and Overstock during this decade.
Cultural Significance
Represents the 'Boutique/Internet' brand era of the mid-2000s, where consumers were introduced to mechanical watches through affordable, highly-complicated Chinese movements marketed with European-sounding names.
Condition Notes
Good condition. The case appears to have minor surface hairlines from handling. The strap shows slight creasing. Crystal appears clear. Overall Grade: Very Good (Pre-owned).
Value Estimate
Secondary market value is typically $50–$120 USD. Original MSRP was often listed at $500+, but they rarely sold for that price outside of promotional discounts.
Care & Maintenance
Avoid water exposure as seals on multiple pushers are common failure points. Service is rarely economical; it is usually replaced if the movement fails. Keep away from magnetic fields to prevent the balance spring from sticking.
Similar Watches
Parnis Multi-Function, Stauer Graves '33, Jaragar Calendar, and certain Ingersoll models. These all use similar Chinese movements with calendar sub-dials instead of chronograph functions.
Interesting Facts
The name 'Duboule' is meant to evoke the history of 17th-century horologist Martin Duboule, though there is no direct lineage between the historic figure and this modern brand.