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Sonnenberg Solar Walnut Wood 40mm

🌱 Every product sold plants a tree — and comes with your own Tree Passport.

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SONNENBERG: POWERED BY THE SUN

+PRODUCT DETAILS

Our solar-powered Sonnenberg collection is the symbol of true sustainability. With it, you'll never have to worry about recharging batteries or harming the planet again. These eco-friendly features of the Sonnenberg are packed into a minimalist 40 mm case. It is powered by a Seiko AS01 movement. Suitable for both men and women, this watch is sure to be part of your wardrobe for many years to come.

Charging Times for Different Conditions

Condition (Fine weather) (Cloudy) (20cm from 30W source) (Indoors)
One Day of Power 2 min 8 min 25 min 100 min
Steady Operation 15 min 90 min 4 h 35 h
Full Charge* 5 h 20 h 60 h -

* A fully charged battery has four months of power storage.

+SPECIFICATIONS
  • Clockwork: Seiko AS01
  • Watch glass: Mineral
  • Closure type: Stainless steel
  • Material of the housing: Walnut wood
  • Bracelet material: Walnut wood
  • Case back material: stainless steel.
  • Case diameter: 40mm
  • Housing thickness: 9.5mm
  • Bracelet length: 25cm
  • Bracelet width: 20mm
  • Weight: 78g
  • Waterproof: 3ATM (Splash water protection)
  • Battery life: Levenly
  • Warranty: 2 Years
  • Luminous hands: No
  • Special attribute: Electricity from solar energy
+SCOPE OF DELIVERY
  • Sonnenberg walnut wood 
  • Authenticity and warranty card
  • Gift wrapping
  • Instructions
  • Tool for removing bracelet parts
+INFORMATION ON THE GUARANTEE

Our aim is to ensure that your Zeitholz clock arrives in perfect condition and remains with you for as long as possible. All clocks are guaranteed for 2 years from the date of sale. In the unlikely event that the clock proves to be defective under normal use, it will be repaired or replaced free of charge at the discretion of the Zeitholz Warranty Department. The Zeitholz guarantee covers malfunction or breakage of:

  • Clockwork
  • Dial: Indices, logo, hands
  • Bracelet connections
  • Fastener: Fastening and closure

Damage to the watch due to improper use, water damage, scratches, etc. is not covered by the manufacturer's warranty. If you have any questions or problems, our dedicated customer service team will assist you as soon as possible.

+SUSTAINABILITY

At Zeitholz, we care about every detail — from how we design your watch to how we care for the planet.

We proudly support sustainable forestry and use FSC-certified wood, ensuring ethical practices that protect nature and communities.

We plant one tree for every product sold through our partnership with Trees for the Future. These trees restore ecosystems and empower smallholder farmers in Africa with food security and income.

Every order includes your own Tree Passport — a personalized certificate showing where your tree (or trees) was planted, the species, and the real-world impact you helped create.


Shipping & Handling

icn-1

TRY RISK-FREE FOR 14 DAYS

icn-1

FREE SHIPPING

icn-1

2-YEAR WARRANTY

icn-1

HANDMADE USING 100% NATURAL WOOD

icn-1

MORE THAN 35,000 SATISFIED CUSTOMERS

SONNENBERG: POWERED BY THE SUN

+PRODUCT DETAILS

Our solar-powered Sonnenberg collection is the symbol of true sustainability. With it, you'll never have to worry about recharging batteries or harming the planet again. These eco-friendly features of the Sonnenberg are packed into a minimalist 40 mm case. It is powered by a Seiko AS01 movement. Suitable for both men and women, this watch is sure to be part of your wardrobe for many years to come.

Charging Times for Different Conditions

Condition (Fine weather) (Cloudy) (20cm from 30W source) (Indoors)
One Day of Power 2 min 8 min 25 min 100 min
Steady Operation 15 min 90 min 4 h 35 h
Full Charge* 5 h 20 h 60 h -

* A fully charged battery has four months of power storage.

+SPECIFICATIONS
  • Clockwork: Seiko AS01
  • Watch glass: Mineral
  • Closure type: Stainless steel
  • Material of the housing: Walnut wood
  • Bracelet material: Walnut wood
  • Case back material: stainless steel.
  • Case diameter: 40mm
  • Housing thickness: 9.5mm
  • Bracelet length: 25cm
  • Bracelet width: 20mm
  • Weight: 78g
  • Waterproof: 3ATM (Splash water protection)
  • Battery life: Levenly
  • Warranty: 2 Years
  • Luminous hands: No
  • Special attribute: Electricity from solar energy
+SCOPE OF DELIVERY
  • Sonnenberg walnut wood 
  • Authenticity and warranty card
  • Gift wrapping
  • Instructions
  • Tool for removing bracelet parts
+INFORMATION ON THE GUARANTEE

Our aim is to ensure that your Zeitholz clock arrives in perfect condition and remains with you for as long as possible. All clocks are guaranteed for 2 years from the date of sale. In the unlikely event that the clock proves to be defective under normal use, it will be repaired or replaced free of charge at the discretion of the Zeitholz Warranty Department. The Zeitholz guarantee covers malfunction or breakage of:

  • Clockwork
  • Dial: Indices, logo, hands
  • Bracelet connections
  • Fastener: Fastening and closure

Damage to the watch due to improper use, water damage, scratches, etc. is not covered by the manufacturer's warranty. If you have any questions or problems, our dedicated customer service team will assist you as soon as possible.

+SUSTAINABILITY

At Zeitholz, we care about every detail — from how we design your watch to how we care for the planet.

We proudly support sustainable forestry and use FSC-certified wood, ensuring ethical practices that protect nature and communities.

We plant one tree for every product sold through our partnership with Trees for the Future. These trees restore ecosystems and empower smallholder farmers in Africa with food security and income.

Every order includes your own Tree Passport — a personalized certificate showing where your tree (or trees) was planted, the species, and the real-world impact you helped create.

Shipping & Handling

icn-1

TRY RISK-FREE FOR 14 DAYS

icn-1

FREE SHIPPING

icn-1

2-YEAR WARRANTY

icn-1

HANDMADE USING 100% NATURAL WOOD

icn-1

MORE THAN 35,000 SATISFIED CUSTOMERS



A MEMORABLE WOODEN WATCH

Engraving wooden watches adds timeless elegance, sustainability, and personalization to each piece. The engraved message serves as a constant reminder of meaningful moments or sentiments, making it a cherished keepsake. As a unique gift, it stands out for its individuality, reflecting the wearer's personality and style. Combining craftsmanship with sentiment, a personalized engraved wooden watch is a special and eco-friendly choice for celebrating milestones or expressing love and appreciation.

Every Purchase Comes With Your Tree Passport

Every Zeitholz order helps plant real trees in Africa — supporting local communities and contributing to a healthier planet. For each watch or accessory in your purchase, one tree will be planted.

With your order, you'll also receive a beautifully designed Tree Passport, detailing the species you helped plant, its planting location, and the reforestation project your purchase supports.

Join us on our journey to plant 10,000 trees — and see how your watch creates real, lasting change: one tree, one family, one future at a time.

TREES PLANTED: 8,857 / 10,000