Frequently asked questions.
Everything you'd want to know about The Manx, ordering, shipping and the guarantee behind every piece.
What is The Manx?
An everyday-luxury automatic watch from Mercier Prototype — Belgian-designed, veteran-owned, and individually numbered, with a Japan-made automatic movement.
Is it automatic or quartz?
Fully automatic. It runs on a self-winding Miyota Cal. 9122 with a roughly 42-hour power reserve — no battery.
What size is the case, and will it fit me?
42mm diameter, 51mm lug-to-lug, on a 22mm strap. It wears true to size and suits roughly 6.5 to 8 inch wrists.
Is it water resistant?
Yes, 10 ATM — fine for everyday wear, swimming and snorkeling, though not deep-sea diving.
What crystal does it use?
A domed sapphire crystal with anti-reflective coating, set in a 316L steel case finished in black PVD.
What dial options are there?
Two: the Noir, a blacked-out dial, and the Blanc, a crisp white dial. Both share the same case and movement.
When does The Manx ship?
It's available to pre-order now and is estimated to ship October 2026. The first run is capped and individually numbered.
Can I pay over time?
Yes — Affirm, Klarna, Afterpay and Cash App Pay are available at checkout, alongside card, Apple Pay and Google Pay.
Is checkout secure?
Yes. Payments are processed securely by Stripe — we never see or store your card details.
Can I cancel my pre-order?
Yes. You can cancel any time before it ships for a full refund.
Where do you ship?
We currently ship within the United States only. We hope to open up international shipping down the road — email us if you'd like to be kept posted.
How much does shipping cost, and is there tax?
Shipping is free within the United States, and every order is tracked and insured to your door. Any applicable sales tax is applied when your order ships.
What is your return policy?
Return within 30 days of delivery for a refund or exchange, in like-new condition with the box and numbered papers. See Returns & Exchanges.
Can I exchange dials?
Yes — we're happy to swap Noir for Blanc, or the reverse, subject to availability.
What warranty comes with The Manx?
Every Mercier is backed by a 5-year limited warranty against manufacturing and movement defects. See Warranty.
How do I make a warranty claim?
Email hello@mercierprototype.com with your order number and the serial number engraved between the lugs.
Who can service it?
The Miyota automatic can be serviced by any qualified watchmaker. Reach out and we'll point you in the right direction.
Who makes Mercier Prototype?
It's designed and stood behind by founder Devin Mercier — veteran-owned, of Belgian heritage, built on radical spec honesty.
Still have a question? Talk to the maker.
Reach out directly — or reserve your individually numbered Manx before the first run is gone.