Maen Brings the Grand Tonneau Jump Hour Into Its Permanent Line

Jumping-hour watches still sit slightly outside the mainstream, which is exactly where much of their charm lives.

Maen is leaning into that appeal with the Grand Tonneau Jump Hour, a permanent collection watch that carries forward the format first seen in its 2025 collaboration with Nico Leonard.

The new version keeps the tonneau case and disc-based display, while adding fresh colours, a sapphire display back and a more accessible price.

At a glance

• Maen has added the Grand Tonneau Jump Hour to its permanent collection after its earlier Nico Leonard limited edition.
• The watch uses a tonneau-shaped 316L stainless steel case with a jumping-hour aperture and rotating minute disc.
• It is priced at EUR 899 including VAT and is due to go on sale from December 10, 2026.

A tonneau case with a sharper everyday brief

The Grand Tonneau Jump Hour is built around a two-piece 316L stainless steel case measuring 34mm wide, 9.7mm thick and 45mm lug-to-lug.

Those proportions give the watch a compact footprint, but the barrel-shaped case and sculpted lugs bring more presence than the width alone suggests.

Maen has used a mix of brushed and polished finishing across the case, giving the shape a more architectural feel.

The lugs rise above the dial line and follow the integrated strap profile, a detail that helps the watch avoid looking like a simple rectangular case with rounded sides.

A sapphire crystal with anti-reflective coating sits up front, while the back now uses a sapphire display caseback rather than the solid back used on the collaboration model.

Water resistance is rated at 50 metres.

Four brushed dials and a different way to read the time

The appeal here is the display, not just the shape.

Hours are shown numerically through an aperture at 12 o’clock, with the numeral jumping instantly at the start of each new hour.

Minutes are read on a rotating disc through the curved window below, giving the watch a more mechanical and graphic character than a conventional handset layout.

Maen is offering four vertically brushed dial versions.

Steel is the cleanest and most neutral option, while Anthracite Black gives the watch a darker, more contemporary look.

Midnight Blue adds a deeper coloured option, and Copper brings the warmest tone with a salmon-like presence.

The modified Seagull movement inside

The Grand Tonneau Jump Hour is powered by the automatic Seagull ST1721, modified by Maen for the jumping-hour and rotating-minute display.

The movement has 20 jewels, runs at 21,600 vibrations per hour and offers an approximately 38-hour power reserve.

Maen says every movement undergoes two weeks of in-house testing before assembly.

Through the sapphire caseback, the movement is visible with a custom rotor, adding a more personal detail to a watch that previously kept its mechanics hidden.

Straps, bracelet options and positioning

The standard fit is a black FKM rubber strap with a stainless steel butterfly clasp.

The clasp is decorated with perlage and includes micro-adjustment, a practical touch on a watch intended to sit close and slim on the wrist.

An orange FKM strap and a bamboo steel bracelet are available as optional extras.

At EUR 899 including VAT, the permanent collection Grand Tonneau Jump Hour comes in below the EUR 999 price of the earlier Nico Leonard collaboration.

Details & Specifications

The Grand Tonneau Jump Hour should appeal to collectors who want something more expressive than a conventional three-hander without moving into difficult-to-wear territory.

It’s a compact, design-led watch with a complication that changes how you engage with the passing hour, and that remains a compelling proposition at this level.