Side by side

Praesidus A-5 UDTvsSeiko Prospex Sea 1968 Heritage Diver's GMT Watch

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

A-5 UDT
PraesidusA-5 UDT
MSRP $645

At a glance

13 of 29 specs differ
Diameter
A-5 UDT38mm
Prospex Sea 1968 Heritage Diver's GMT Watch42mm
Power Reserve
A-5 UDT40h
Prospex Sea 1968 Heritage Diver's GMT Watch72h
Water Resistance
A-5 UDT200m
Prospex Sea 1968 Heritage Diver's GMT Watch300m
MSRP
A-5 UDT$645
Prospex Sea 1968 Heritage Diver's GMT Watch$1,700

Full specifications

Case

5 specs
Diameter
38mm
42mm
Thickness
13.3mm
Lug-to-Lug
48.6mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

4 specs
Crystal
Domed Sapphire
Sapphire
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Blue
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Miyota 9015
6R54
Power Reserve
40h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$645
$1,700

Follow this matchup

Get a note when Praesidus A-5 UDT 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.

Praesidus A-5 UDT

The Praesidus A-5 UDT is noted for its historically inspired design, featuring an oversized crown cap and chain that pays homage to WW2 canteen watches. Reviewers highlight its functional dial with embossed, Super-LumiNova filled numerals and markers for legibility, alongside 200m water resistance and a 38mm brushed stainless steel case. Some owners find the 11.7mm thickness problematic, describing it as disproportionately tall. The watch's ana/digi functionality and connection to special operations forces are also praised. On balance, owners and reviewers appreciate the Praesidus A-5 UDT for its unique historical design elements and functional dial.

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.