The H. Moser & Cie. x Studio Underd0g Passion Fruit is a two-watch collaboration, not a single model: it pairs Moser’s high-complication Endeavour Perpetual Calendar Passion Fruit with Studio Underd0g’s playful 03SERIES Passi0n Fruit monopusher chronograph. Amber, purple and gold details tie the distinct watches together.
Two watches, two very different complications
The set brings together a perpetual calendar from H. Moser & Cie. and a hand-wound chronograph from Studio Underd0g. The official product page identifies the Moser as reference 1800-1200 for the set and presents the watches as a pair. H. Moser & Cie.’s product page and the 2024 announcement give the model names and collaboration details.
| Watch | Complication and movement | Diameter | Power reserve | Water resistance |
|---|---|---|---|---|
| H. Moser & Cie. Endeavour Perpetual Calendar Passion Fruit | Perpetual calendar; HMC 800 calibre | 42.0 mm | 168 hours | 3 ATM |
| Studio Underd0g 03SERIES Passi0n Fruit | Monopusher chronograph; hand-wound Sellita SW510 M | 38.5 mm | 63 hours | 5 ATM |
The measurements and movement specifications are from Moser’s currently indexed product page. Launch coverage also identifies the Moser at 42 mm and the Underd0g at 38.5 mm, with water-resistance equivalents of 30 m and 50 m respectively. See Hodinkee’s 2024 launch report.
How the Passion Fruit design links the pair
The watches share a palette rather than matching dials. The Moser combines purple sunburst lacquer with Grand Feu enamel on an 18K yellow-gold base. Studio Underd0g uses a layered dial described as coarse dégradé amber and royal purple. The result places a traditional high-end finish beside a more overtly playful colour treatment while keeping the set visually connected. The brands’ collaboration announcement describes the design and movements; Moser’s product listing supplies the current technical details.
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Price and edition count: what published sources say
Moser’s product page currently indexed in 2026 displays CHF 59,000 excluding VAT for the set. That is a current-page figure, not the reported launch price. Two 2024 launch reports—Hodinkee and Time+Tide Watches—put the set at US$64,900.
The stated edition size is not consistent across the published sources. Moser’s currently indexed product page labels the set limited to 200 pieces, while Hodinkee’s 2024 launch report describes 100 sets; Time+Tide also reported 100 sets. The available reports do not establish why the numbers differ, so neither should be treated as an undisputed count.
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No reliable source cited here assigns a separate price to either watch. The published amounts refer to the pair; dividing the price or treating one figure as the price of an individual model would be unsupported.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Is the set currently available?
Current stock is not established by the available product information. Moser’s page offers reservation or inquiry actions, which provide a way to contact the brand but do not confirm that a set is in stock. The sources cited here also do not verify resale availability.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
