Side by side

Sinn EZM 3FvsSeiko Prospex Sea

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Sinn EZM 3F

Owners widely praise the Sinn EZM 3F for its excellent legibility, robust bead-blasted build, and practical left-hand crown, with some noting its compact, slim wearability and smart appearance on a bracelet. One owner flags minor finishing imperfections and an awkward date window placement, and expresses a desire for tegimented scratch resistance. Overall, owners rate the Sinn EZM 3F highly for its practical mission timer design and compact wearability.

From video reviewers

The Sinn EZM 3F's Ar-Dehumidifying Technology for fogging prevention and temperature resistance is a key strength. Reviewers noted the bracelet lacked on-the-fly micro-adjustment and diver's extensions.

Seiko Prospex Sea

Owners widely praise the Seiko Prospex Sea for its excellent lume, robust build, and value, with many highlighting the comfortable 4 o'clock crown and reliable movements. Reviewers note impressive case finishing and attractive dials, with specific models lauded for their gradient blue designs and smooth bezel actions. Accuracy figures vary, with one owner reporting +9 seconds/day after demagnetization, while others find the watches to be good first "proper" watches. Some owners find the stock rubber straps uncomfortable or the overall size substantial on smaller wrists. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its combination of strong dive watch functionality and appealing design at its price point.

At a glance

16 of 29 specs differ
Diameter
EZM 3F41mm
Prospex Sea41mm
Power Reserve
EZM 3F38h
Prospex Sea70h
Water Resistance
EZM 3F200m
Prospex Sea200m
MSRP
EZM 3F$1,933
Prospex Sea$900

Full specifications

Case

5 specs
Category
Tool
Diver
Thickness
11.7mm
12.3mm
Lug-to-Lug
46.9mm
Finish
bead-blasted
Caseback

Crystal & Dial

5 specs
Crystal Shape
Curved
AR Coating
Underside
Anti-reflective coating on inner surface
Dial Color
Black
Indices
Lume
Luminescent
LumiBrite on hands, index(es) and bezel

Movement

5 specs
Caliber
Sellita SW200-1
6R35
Beat Rate
28,800 vph
0 vph
Power Reserve
38h
70h
Jewels
26
24
Complications
Date, Pilot's Bezel
None

Pricing

1 specs
MSRP
$1,933
$900
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