Sinn 456 vs Sinn EZM 3

Movement and upkeep

Sinn 456 uses a quartz movement, while Sinn EZM 3 uses a automatic movement — that changes day-to-day ownership, upkeep, and the overall feel on the wrist.

Size and wearability

Fit is a real separator here — compare case width and lug-to-lug before deciding, especially if wrist comfort matters more than headline features.

Water resistance

Water resistance is a meaningful separator here — the higher-rated option gives more flexibility for swimming or rougher daily use.

Price and value

There is a real price gap here — treat the more expensive option as an upgrade decision and confirm whether the extra spend buys something you will notice in weekly use.

Style and use case

Both lean into a similar tool use case — the choice is more about fit, features, and price than category.

Crystal and materials

Materials are broadly similar, so finish, fit, and price will matter more than the materials list alone.