The lines at a glance.
Seiko 5 Sports.
The SRPD55 is a 42.5 mm automatic with a 4R36 movement and a rotating bezel, listed at 100 m. It is the classic entry Seiko; see our comparison with the Citizen Sport Automatic.
Presage.
Presage models such as the SRPB41 and SRPE45 use the 4R35 and Hardlex crystals, with box-shaped crystals and refined dials. Compare them with the Tissot Le Locle.
Prospex.
Prospex is Seiko’s tool-watch range, including divers. Our dive watch buying guide explains what to look for in a diver.
Which should you choose?
Start with the purpose: a first sports automatic points to Seiko 5, a dress watch to Presage, a diver to Prospex. Consider alternatives from Swiss vs Japanese watches and our best automatics under $500.
Seiko watches we reviewed.
5 Sports
Sporting spirit. Everyday ease.
Presage Blue Moon
The dress watch, with a little depth
Presage Cocktail Time
The green-dial conversation starter
A few good questions.
What is the difference between Seiko 5 and Presage?
Seiko 5 is the sporty entry automatic range, while Presage is a dressier line with refined dials.
What is Seiko Prospex?
Seiko’s tool-watch line, including divers and outdoor watches.
Is Grand Seiko the same as Seiko?
Grand Seiko is a separate luxury brand with its own movements and finishing.
Are Seiko watches automatic?
Many are, including Seiko 5 and Presage, but Seiko also makes quartz and solar watches.
How we write guides: we explain watchmaking from manufacturer documentation and published standards, and say plainly where numbers vary by brand or movement. Our approach.