Assen
Leadwood & Leadwood
- 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
The TT Circuit Assen is located in the Netherlands and has been the venue for motor sport races since 1925. Due to the high speeds which were reached there in former times, it carries the nickname "Cathedral Of Speed".
- Case: 42mm diameter, made from leadwood and stainless steel in black
- Dial: Fine-grained leadwood
- Movement: Quartz movement by Citizen
- Waterproof up to 5ATM
- Wristband: Adjustable wristband, made from leadwood and stainless steel in black (fits on every male wrist)
PACKAGE CONTENTS
How do I get my watch running?
In order to get your watch up and running, remove all protective foils first. With a Quartz movement, you can directly set the time by turning the crown, which is the small calibration wheel on the side of the case. As soon as you’ve set it to the correct time, push the crown gently against the case and your watch will begin operation.
If you have an automatic or solar watch, you’ll have to first wind it up or charge the battery.
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. :)
Core Features
Hydro-Defense Technology
Our HydroDef technology takes the resilience of natural materials to the next level. By means of a special resin coating, exposed elements of natural materials are significantly better protected from weather conditions (especially water).
Hydro-Def makes your piece of nature a faithful companion for all-purpose wear!

Chronograph Watch
Chronographs combine precision with a sporty look. On top of that, these watches have an integrated stop function, which makes your everyday life easier! The operation is very simple: there are two buttons on the side of the watch case. The upper one starts and stops the measuring process, and the lower one resets the stop hand to zero. Get your multifunctional timepiece and let it accompany you through your busy everyday life!

Metal-Core Technology
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.
Hello Nature-Lover!
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