
WATERBEAR 40 AUTOMATIC – SPECIAL EDITION
LIMITED TO 25 PIECES.
A PASSION PROJECT ENGINEERED FOR THE CURIOUS
The Waterbear is Will Chai’s debut timepiece, born from a passion for meticulous craft and enduring design at WillChai. As a brand built on trust and the importance of the personal touch, we applied the same eye for detail and commitment to quality to horology.
This watch is named after the Tardigrade, or “Waterbear,” a microscopic animal famed for its ability to adapt to all the conditions of the Earth. This watch is engineered with that same breath of resilience. It is a robust diver, hand-assembled to ensure every piece meets the highest standard of quality.


IN THE SPIRIT OF MICRO-ENGINEERING
The Waterbear offers a balanced blend of classic dive aesthetics and modern micro-engineering. Our watch is designed to offer maximum value through meticulous detail.
The case features a bold, unidirectional Blue Ceramic Bezel Insert offering extreme scratch resistance and a satisfying 120-click feel. The stunning, textured Submarine Blue dial provides a depth and texture that changes with the light, provoking the shifting colors of the ocean. Bright green Photoluminescent Lume ensures legibility underwater.
The assembly is protected by a Double Dome Sapphire Glass, giving the dial a beautiful vintage distortion while providing modern scratch protection.
200M OF WATER RESISTANCE AND RELIABLE AUTOMATIC POWER
The Waterbear is a true tool watch. It is fitted with a screw-down crown and solid screw back to achieve 200-meters of water resistance.
This watch is powered by the self-winding Seiko NH35A calibre, a reliable Japanese automatic movement renowned for its quality and ease of maintenance. This movement ensures dependable daily timekeeping, giving you both durability and peace of mind for decades to come.





The WillChai Waterbear 40 Automatic
SPECIFICATIONS
CASE
Material – Stainless steel 316L
Lug Width – 20mm
Diameter – 40mm
Thickness – 13.8mm
GLASS – Double Dome Sapphire Crystal
BEZEL – Unidirectional, 120-Click, Blue Ceramic Insert
DIAL – Custom Textured Submarine Blue Finish
CROWN – Screw-Down Crown
CASEBACK – Solid Screw Back
STRAP – 20mm Blue Rubber Waffle Strap
WATER RESISTANCE – 200m (20 ATM)
MOVEMENT – Seiko Instruments NH35A
TYPE – Automatic (Self-Winding) Mechanical
JEWELS – 24 Jewels
POWER RESERVE – Approximately 41 hours
FUNCTIONS – Hacking, Manual Winding, Date Display
ORIGIN – Japan
Who’s behind this?
WillChai is my personal brand ⎯ a reflection of my passion for quality, visual storytelling, and detail-oriented craftsmanship.
My life is dedicated to pursuits that demand precision and endurance. As an Honours Health Sciences student at McMaster University, and aspiring doctor, I am trained to focus on complex, human-centered systems, whether it’s bioethics, medical terminology, or the delicate mechanics of a watch movement.
The Origin of The Waterbear
This side project was born in 2018 from a personal passion for horology and a belief that a high-quality, durable timepiece shouldn’t be reserved for massive corporations. I was a dreamer then, as I am now.
Why Buy From Me?
- The WillChai Standard: The stylized ‘W’ on the dial symbolizes the personal assurance of the product.
- Quality Control: Every Waterbear will be Quality Assessed by me.
- Value and Endurance: The Waterbear is designed for resilience, rivaling the materials used by watches 10x to 100x the cost. We also back this commitment with a 24-Month Warranty against movement failure and water damage.
When you buy a Waterbear, you’re investing in a piece of hand-assembled micro-engineering, backed by a real person.

A LIMITED EDITION OF 25 PIECES
To celebrate the debut of WillChai timepieces, only 25 units of the Waterbear will be produced. This special edition will never be reproduced again.
Price: CAD$390 ≈ USD$280
Worry-Free Assurance:
- 24-Month Warranty: We offer a full 2-year warranty against movement failure and water damage.
- Assembly Lead Time: As each Waterbear is hand-assembled and subject to parts availability, please note there is an estimated 45 to 65-day turnaround time from order confirmation to fulfillment.
RESERVE YOUR WATERBEAR
To purchase, please contact me directly:
Email Subject: Waterbear Purchase Inquiry
Email Address: me@willchai.com
Free Pickup: Local pickup is available in Hamilton, Ontario.
Shipping: Shipping costs are calculated based on your location.
