Logancha
Marble & Silver
- Delivery: 2 - 5 workdays
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Free express shipping worldwide
Our customers enjoy free express delivery without any import duties or taxes! Learn more>
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24 months warranty
If you find a defect in your model, please contact our customer support and we’ll find the best solution for you. Learn more>
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24-day refund policy
You are free to return your model within the 24-day period. We advise that you first contact our customer support before creating the return label. Learn more>
- No after-sale duties or taxes for US customers
Our automatic Logancha model, crafted from marble and stainless steel in silver, is the perfect choice for anyone who loves a classic look that’s still bold and adventurous!
The Logancha impact event is located in Western Siberia and was created by an asteroid that struck the Earth some 40 million years ago. The crater is very unique in that it has not been exposed at the surface.
- Case: 42mm diameter, made from stainless steel in silver
- Dial: Exhibition design made from genuine gray-colored marble and stainless steel in silver
- Movement: Automatic movement by Seiko
- Waterproof up to 5ATM (for more information see the manual)
- Bracelet: Adjustable length, made from genuine gray-colored marble and stainless steel in silver (fits on every male wrist)
PACKAGE CONTENTS
What is delivered in the package contents?
Every single Holzkern product is delivered in a high-quality solid wooden box in which your piece of nature can be safely stored. The wooden box is lined with cork, which optimally protects your model during transport or storage.
The cork that comes with our watches and Bandlets is reversible and inscribed on both sides respectively with the sentence in German - “So einzigartig wie du”, as well as English - “As unique as you”.
For all models with linked bracelets, we additionally send the matching extension links including tools free of charge. In this way, you can individually adjust your personal piece of nature and immediately start wearing it. :)
How does an automatic watch work?
Your automatic watch works somewhat differently to a watch with Quartz movement. Because you’ve chosen a watch with mechanical movement, there is in this case no inbuilt battery and you’ll have to first give your model a little help to get it up and running.
Before you wind it up, make sure that the crown is in the normal position, which means fully pressed against the case. In order to get your watch operating, turn the crown 40 times in a clockwise direction and your watch will run for approximately 42 hours. If you wear your watch within this time, the running time is extended because the clockwork will be automatically wound up via the motion of your body.
In case your model has a variety of functions, like e.g. a date display or a dual time display, get to know these functions in advance in order to maximise the full potential of your watch.
How do I adjust my watch to the perfect size?
With so many different designs, there’s definitely the perfect model for every wrist size. Our watches with linked bracelets can be easily adjusted to any preferred length.
Additional bracelet links and the necessary tools are enclosed free of charge so that you can immediately adjust your model to your individual wrist size and wear it.
The leather watch straps and vegan alternative straps in our product range come in industry-standard sizes. For particularly short or long watch straps, you’re sure to find what you need at your trusted specialised watch or jewellery dealer.
Core Features
Automatic Movement
Automatic watch movements represent the original and traditional functionality of wristwatches. This technology makes use of gravity and transforms the motion of your arm into energy to wind up your timepiece.
So that your automatic watch keeps running when it’s kept still, it features a power reserve with which it will keep running for 35-60 hours, depending on the type of inbuilt clockwork you have.
Stay in motion and your watch will do the same!

marble
A touch of luxury. The name "marble" comes from the Greek word "mármaros", which means "shining stone". The history of marble dates back to ancient Greek and Roman art, where marble was used for sculptures and architecture. With its distinctive texture and coloring, marble provides a particularly aesthetic appearance that makes our watches and jewelry made from this stone very special statement pieces.
Waterproof Design
You want to wear your unique piece 24/7 and never take it off again?
Then our products with a waterproof design are just the right fit for you!
Stone, pearls or stainless steel - these materials not only look good, but are also 100% water-resistant. Wear your piece of nature confidently, even while showering or during your next beach vacation!

See-Through-Caseback
We know that it’s what is on the inside that counts - and that those values can also be really impressive! Models with a see-through caseback enable a unique view into the internal clockwork heart of your piece of nature. Particularly with our automatic models, your watch is equally impressive from the front side as well as from the back.
Hello Nature-Lover!
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