Side by side

Sinn 144 St DIAPALvsSeiko Prospex Sea 1968 Heritage Diver's GMT Watch

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

144 St DIAPAL
Sinn144 St DIAPAL
MSRP $4,428

At a glance

17 of 29 specs differ
Diameter
144 St DIAPAL41mm
Prospex Sea 1968 Heritage Diver's GMT Watch42mm
Power Reserve
144 St DIAPAL48h
Prospex Sea 1968 Heritage Diver's GMT Watch72h
Water Resistance
144 St DIAPAL200m
Prospex Sea 1968 Heritage Diver's GMT Watch300m
MSRP
144 St DIAPAL$4,428
Prospex Sea 1968 Heritage Diver's GMT Watch$1,700

Full specifications

Case

7 specs
Category
Tool
Diver
Diameter
41mm
42mm
Thickness
14.2mm
13.3mm
Lug-to-Lug
48.6mm
Finish
bead-blasted
Brushed and polished
Water Resistance
200m
300m
Caseback
Solid

Crystal & Dial

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

Movement

4 specs
Caliber
LJP 8000
6R54
Power Reserve
48h
72h
Jewels
28
24
Complications
GMT, Date, Chronograph, Tachymeter
None

Pricing

1 specs
MSRP
$4,428
$1,700

Follow this matchup

Get a note when Sinn 144 St DIAPAL vs Seiko Prospex Sea 1968 Heritage Diver's GMT Watch gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

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

Sinn 144 St DIAPAL

The Sinn 144 St DIAPAL is widely praised for its flawless bead-blasting, comfortable 41mm wearability, and legible presentation of information, including a pulsemeter and tachymeter scales. Owners appreciate its quality and confidence-inspiring feel, with one noting excellent timekeeping at 5 seconds slow over 4 days. However, the reset pusher is stiff, and strap options are limited by the integrated case. Some find the 12-hour UTC hand less intuitive, and one owner considers it too sporty for a sole daily watch. On balance, owners rate the Sinn 144 St DIAPAL highly for its robust build and functional, legible dial at its price point.

Seiko Prospex Sea 1968 Heritage Diver's GMT Watch

The Seiko Prospex Sea 1968 Heritage Diver's GMT Watch offers a 300-meter depth rating and a caller-style GMT complication powered by the Caliber 6R54 movement, which provides a 72-hour power reserve. Reviewers note its refined clasp with extensive micro-adjustment. However, the movement's accuracy, ranging from +25 to -15 seconds per day, is considered a drawback by some. Overall, reviewers highlight the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch as a good reminder of Seiko's value, despite the wide accuracy range of its movement.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.