Gold Apple Watch Series 12 with Hermès Bleu Nuit En Mer – Gold, Rose Gold & Platinum
$ 3,450
A Hermès En Mer knit band in Bleu Nuit, its engraved buckle plated to match an Apple Watch Series 12 case in 24K Gold, Rose Gold or Platinum. Built on the 46mm case.
A Nautical Knit Gold Apple Watch Series 12 Hermès Bleu Nuit En Mer, Inspired by the Sea
En mer is French for ‘at sea’, and the Gold Apple Watch Series 12 Hermès Bleu Nuit En Mer wears that idea openly: a night-blue knit band with raised diagonal ridges that roll across it like swell on open water. We fit it to a brand-new Apple Watch Series 12 whose aluminium case is plated in 24K Gold, Rose Gold or Platinum in our Dubai atelier, and it is the most expensive pairing in our gold Apple Watch Series 12 collection.
It suits someone who spends summers near the water, or likes a sailing look ashore. The band is a Hermès En Mer band, left as it was made; its buckle carries the Hermès name and is plated to match the case. Leronza works independently of both Hermès and Apple. It is offered on the 46mm case only.

Knit, Keeper and Buckle A Plated Pin Buckle, an Untouched Watch
Plating goes onto four parts: the aluminium case, the Digital Crown, the side button and the band’s buckle. The knit itself, including its fabric keeper loop, is not plated. Everything Apple engineered stays as Apple left it: the display, the S11 chip, the sensors, the battery and the sensor back, whose original finish lets the Apple Watch Magnetic Fast Charger attach and charge normally.
The fastening is a traditional pin buckle. The strap passes through the frame, the pin drops into a hole and the keeper holds the loose end flat, so nothing needs sizing before delivery. Look closely and the flat bar across the buckle shows the engraved Hermès name, now in the same metal as your case.

Apple Specifications
Apple Watch Series 12 Series 12 Figures, Straight from Apple
Beneath the plating is a standard aluminium Apple Watch Series 12, so this table repeats Apple’s own figures for that model. Weight is not listed because plating adds slightly to it. Apple publishes the full set on its Series 12 technical specifications page.
The name may evoke the sea, but the watch should stay dry: after customisation, Apple’s 50 m water rating cannot be relied on, so leave it off for swimming and showering. Our 24K gold care guide explains how to keep a plated finish looking bright.
Ready for the Occasion Presenting the Gold Apple Watch Series 12 Hermès Bleu Nuit En Mer
A retirement, the launch of a boat or a birthday on the water deserves the top of the range. Your watch is plated to order and handed over in a black leather presentation box with a gift bag. Packed inside are Apple’s original documentation, the Magnetic Fast Charger to USB‑C cable, a 20W USB‑C power adapter and a Leronza Certificate of Authenticity, which anyone can check through our certificate lookup.
A boat’s name, a date or the coordinates of a favourite harbour can be engraved via our personalisation service, and your specialist confirms what fits and where before production. To see how the Gold Apple Watch Series 12 Hermès Bleu Nuit En Mer sits on price against the rest of the range, read our Series 12 strap and price guide.
- Watch: Apple Watch Series 12 (aluminium)
- Case size: 46mm
- Finishes: 24K Gold, Rose Gold or Platinum, each 5–7 microns
- Price: $ 3,450

Frequently Asked Questions
En Mer Questions Gold Apple Watch Series 12 Hermès Bleu Nuit En Mer: Questions and Answers
What does Leronza actually plate here?
The aluminium case, the Digital Crown, the side button and the buckle engraved with the Hermès name, each at 5 to 7 microns. The Bleu Nuit knit band and its keeper loop are left unplated.
Does a real Series 12 sit under the gold?
Yes. It starts as a brand-new aluminium Apple Watch Series 12 before it reaches our Dubai bench, and its sensors keep reading heart rate, blood oxygen and temperature while watchOS updates arrive as usual. Leronza is independent of Apple and Hermès; this is our own pairing, not an edition from either company.
Can I charge it the usual way?
Yes. The sensor back is untouched, so the Apple Watch Magnetic Fast Charger that comes in the box connects and charges as normal.
Is engraving available?
It is. Send your text through our personalisation page; a specialist confirms the layout and position before production begins. Engraving is complimentary with every watch.
Which case size does it come in?
The 46mm case only, in 24K Gold, Rose Gold or Platinum. The knit band fastens with a pin buckle, so no adjustment is needed on our side.
How much is the Gold Apple Watch Series 12 Hermès Bleu Nuit En Mer?
$ 3,450, the same in all three finishes. It is the highest-priced pairing in our Series 12 range.
What happens to the warranty and water resistance?
Apple may treat the customised watch as modified, which can affect its manufacturer warranty. The 50 m rating should not be trusted after plating, so no swimming or showering. Leronza Care covers the customised parts.
How does it compare with the other blue bands?
The Deep Blue Modern Buckle is Apple’s smooth FineWoven band with a magnetic buckle, and the Navy Ocean Band is Apple’s ribbed sport band with a plated buckle and loop. For something darker there is WildGrace in black crocodile-textured leather, or Elite for a bracelet of polished links. Browse them all in the Series 12 category.
Set Sail
Reserve the Bleu Nuit En Mer Series 12
Choose 24K Gold, Rose Gold or Platinum, then place a 50% deposit or pay the full amount. Your Leronza specialist will confirm engraving, production and fully insured delivery anywhere in the world.
| Size | 42mm, 46mm |
|---|---|
| Finish | 24K Gold, Platinum, Rose Gold |
We at Leronza understand your GoldPrivé piece is a unique expression. That's why we extend our dedication to luxury throughout the shipping and delivery process.
Expertly Crafted Delivery
- Customization: Allow 1-2 weeks for our artisans to meticulously craft your masterpiece.
- Dedicated Service: Upon order, receive confirmation and a call within 2 business days to discuss customization and estimated delivery.
- Complimentary Shipping: We ensure your Leronza arrives worry-free with complimentary shipping worldwide.
- Luxury Packaging: Your masterpiece will be lovingly encased in our signature packaging, arriving in pristine condition.
Seamless Delivery Experience
- Secure Shipping: We partner with trusted carriers renowned for secure and reliable luxury-goods handling.
- Delivery Timeframes: Expect your Leronza within 5-7 business days (UAE) or 7-10 business days (International) after customization.
- Real-time Tracking: Receive shipping notifications with tracking information to monitor your order's journey.
- Full Insurance: All Leronza orders are fully insured during shipping.
For any inquiries, please contact us at sales@leronza.com or +971 600 56 00 34.
Please note: While we strive to meet these estimated delivery times, unforeseen circumstances may cause delays.

