is an experimental automatic men’s watch collection where Alpha Sierra explores bold shapes, materials and design details. Each model in this series represents a different approach to form and character, while maintaining a strong focus on wearability.

The watches in the Prototype X Series combine automatic movements with expressive case designs and distinctive dials. This collection is less about following conventions and more about testing new ideas within the Alpha Sierra design language.

Prototype X consists of multiple variations, each produced in limited numbers and carrying its own identity. Together, they form a collection made for those who appreciate originality, mechanical watches and designs that stand apart from regular production models.