Holzkern Koh Mak 9010631007140 Men's Chronograph Solar Blue • Solar Movement Epson VR43 • Walnut Wood & Genuine Marble

The Holzkern Koh Mak is a remarkable men's chronograph that combines cutting-edge solar technology with the warm charm of natural materials. The 45 mm case unites brushed silver stainless steel with hand-finished dark walnut wood elements in a truly distinctive ensemble. At its heart lies a genuine blue marble dial – a natural material that makes every single piece absolutely unique, as no two slabs of marble are ever identical.

The Koh Mak is powered by the Epson solar movement VR43, which converts light into energy, eliminating the need for battery changes altogether. The chronograph features a stopwatch function as well as a date display. Scratch-resistant mineral glass reliably protects the refined dial, while the screw-down case back and the fluted crown with side guards provide additional robustness. The brushed stainless steel bracelet with walnut wood centre links integrates seamlessly into the overall design and is secured by a safety folding clasp with logo engraving. Additional links and a link-removal tool for easy size adjustment are included.

Key Features of the Holzkern Koh Mak

• Epson solar movement VR43 – converts light into energy, no battery change required
• Genuine blue marble dial: every piece a one-of-a-kind creation from nature, paired with walnut wood accents
• Full chronograph functionality with stopwatch and date display in a splash-resistant case

Care Instructions for Wristwatches

Care & Cleaning

• Daily: Wipe case and bracelet with a soft, dry cloth to remove dirt and perspiration.
• Water-resistant watches: Clean with mild soapy water and a soft brush, rinse, dry thoroughly.
  Important: Screw down the crown firmly beforehand!!!
• Not water-resistant: Clean only dry or slightly damp, do not use water or cleaning agents.
• Avoid: Harsh chemicals, perfume, cosmetics and heat.
• Leather straps: Do not soak, clean only slightly damp and allow to dry away from heat.
• Water resistance: Do not wear in the shower or bath, have it tested annually.
• Battery (quartz): Have a depleted battery replaced immediately.
• Mechanical watches: Full service by a master watchmaker every 5 years.

Storage & Handling

• Store the watch separately, not directly with other jewellery (risk of scratching).
• When winding mechanical watches, lay them down flat; do not leave the crown pulled out.