*batteries not included

Movement

*batteries not included

Movement

(Category)

(Category)

Movement

Movement

(dept.)

(dept.)

The Watch

The Watch

(Year)

(Year)

2025

2025

(Information)

(Information)

At the core of the Vanitas is the Sellita SW300-1, a movement chosen not for hype, but for heritage. Born from the lineage of the ETA 2892, it carries forward decades of Swiss engineering refined through countless iterations. The SW300-1 is a thin, high-precision automatic caliber, 3.6 mm in height, built around a balance of durability, serviceability, and long-term accuracy.


It beats at 28,800 vibrations per hour, offering a smooth, reliable cadence of eight ticks per second. Its 42-hour power reserve, bidirectional winding system, and shock-resistant architecture make it ideal for a watch designed to operate in real environments, not display cases.


In a world where many brands chase exclusivity through in-house movements, Arena chose the opposite: a proven engine trusted by military-grade tool watches and independent makers alike.

At the core of the Vanitas is the Sellita SW300-1, a movement chosen not for hype, but for heritage. Born from the lineage of the ETA 2892, it carries forward decades of Swiss engineering refined through countless iterations. The SW300-1 is a thin, high-precision automatic caliber, 3.6 mm in height, built around a balance of durability, serviceability, and long-term accuracy.


It beats at 28,800 vibrations per hour, offering a smooth, reliable cadence of eight ticks per second. Its 42-hour power reserve, bidirectional winding system, and shock-resistant architecture make it ideal for a watch designed to operate in real environments, not display cases.


In a world where many brands chase exclusivity through in-house movements, Arena chose the opposite: a proven engine trusted by military-grade tool watches and independent makers alike.

Every mechanical choice behind the Vanitas was made with purpose. The SW300-1’s thin profile allowed the case to maintain a balanced 12.5 mm thickness without sacrificing depth rating or rigidity. Its parts are widely available, easily serviced anywhere in the world, and designed to run for decades when maintained with discipline.

Inside, precision tolerances and finishing reflect the quiet elegance of function perfected over time. It doesn’t need to be seen through a sapphire caseback to be appreciated, the assurance lies in knowing what’s inside: a movement with a history of reliability measured not in marketing cycles, but in years of dependable performance.

In the Vanitas, the SW300-1 becomes more than a mechanism, it’s a heartbeat built to outlast its wearer.

More Projects

Stay up to date

Stay up to date

Stay up to date