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Case - 00:34 AM (The first 34 mm case for Seiko modding)

Case - 00:34 AM (The first 34 mm case for Seiko modding)

Regular price €86,00
Regular price Sale price €86,00
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Meridiano & AndoAndoAndo present the first 34mm case for Seiko NH automatic movements!

For years, the Seiko modding community had no options for cases smaller than 36mm. But the wait is finally over! We've teamed up with the incredibly talented AndoAndoAndo to create a sweet, thin, and beautiful 34mm case – perfect for moms, girlfriends, folks with smaller wrists, or anyone who loves petite watches!

The Case

Our case is made entirely of 316L stainless steel, offering superior hardness and durability. Unlike other grades, 316 stainless steel is highly corrosion-resistant in acidic, alkaline, and chloride environments (including pool and sea water) and is 100% rustproof. It's also commonly used in the medical industry because its hard surface prevents the adherence and survival of microbes.

The case features a stunning and subtle mix of brushed (for the lugs, the crown top and case top) and polished (for the rest of the case) finishes.

The 5 ATM water rating means it can withstand water pressure up to a depth of 50 meters before sustaining water damage. A 5 ATM watch can be worn while swimming for brief periods, in the shower, or in the rain, but should never be used for water sports of any kind. Take special care with warm to hot water, as it can ruin the seal that prevents water from entering the watch. Hot water can also cause condensation inside the watch.

The Caseback

We offer two types of casebacks to suit your preferences. Since what's hidden is often as important as what's visible, we've selected the best materials for the caseback: 316L stainless steel and sapphire crystal (for the exhibition caseback).

- Solid Caseback: This is the thinner option (the case thickness is only 11mm with this caseback). We've left most of it blank so you can use the space for any engraving you'd like.

- Exhibition Caseback: If you're like us and love being mesmerized by the beauty and magic of automatic movements, we've created a beautiful exhibition caseback with a flat sapphire crystal that allows you to see the beating heart of your creation. This option is barely thicker than the solid caseback (case thickness is 11.5mm with this caseback).

The Crown

Despite its compact size, the crown is elegant and designed to be easy to manipulate.

The Glass

We chose a beautiful and durable flat sapphire crystal with an AR coating so you can fully enjoy the beauty of your dial.


The case is compatible with the following Seiko automatic movements:
NH35, NH36, NH70, NH71, NH72 (M variant)
7S26, 7S36, 7S25, 7S35, 6R15, 4R15, 4R35, 4R36

Please note that this case is NOT compatible with the NH34 movement due to its thickness.


Diameter: 34mm
Lug-to-lug: 39mm 
Thickness: 11mm with solid caseback, 11.5mm with exhibition caseback
Strap width: 18mm

Compatible with 28.5-29mm dials
Flat sapphire crystal with AR coating
316L stainless steel
5 ATM water resistance
Screwed-down caseback

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