Zebrawood & Black
The breastbone (Sternum) is a flat, sword-shaped bone in the center of our chest. It acts as protection and safeguards our internal organs like the heart and lungs from external influences.
Our automatic Sternum model should remind you that, although a sheltered life may have great value, true happiness is quite often associated with risk.
This model has been in high demand recently and is not in stock at this time.
All of our products are manufactured in small batches to ensure as much variety as possible for our customers.
The good news: This model will be continued in another production series.
To reserve a model from the upcoming production series you can pre-order it now.
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!
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.
Our Metal-Core technology has been especially developed in order to make our watch constructions with natural materials even more durable. With timepieces that have this special type of construction, the clockwork is encased in an airtight metal jacket that guarantees a waterproofness of up to 5ATM.
We thereby unify the best of two worlds: natural diversity of materials & the longevity of our designs.
- Case: 42mm diameter, made from zebrawood
- Dial: Stainless steel in black
- Movement: Automatic movement by Citizen
- Bracelet: Adjustable length, made from zebrawood and stainless steel in black (fits on every male wrist)
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.
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.