Seiko Prospex Alpinist SPB155

The Seiko Prospex Alpinist SPB155 pairs a green dial with a compact 38mm stainless-steel case and bracelet. It offers the outdoor-inspired character of the Alpinist collection in smaller proportions than the 39.5mm SPB117.

Why this watch stands out

The automatic 6R35 movement provides approximately 70 hours of power reserve. Its 12.9mm-thick case has a curved sapphire crystal with anti-reflective coating on the inner surface, while water resistance is rated to 20 bar (200 meters).

What to know before you buy

Choose this reference if you want a green-dial mechanical watch with a 38mm case and a steel bracelet. The automatic movement runs on stored mechanical energy, so you may need to wind and reset it after it has been left unworn beyond its power reserve.

Our take

The green dial gives this Alpinist its personality, while the compact case and bracelet make it a compelling everyday option for someone who prefers smaller sports watches.