Side by side

Seiko Prospex Sea PADI Special EditionvsUndone Basecamp Gmt

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.

Seiko Prospex Sea PADI Special Edition

The Seiko Prospex Sea PADI Special Edition is widely praised for its attractive blue and red PADI colors, rich dial aesthetic, and excellent lume that stands out even in dim environments. Owners highlight its robust build quality and excellent bezel action, noting the wave dial is a favorite. However, the Hardlex crystal and the 4R36 movement's accuracy range of +45 to -35 seconds per day are identified as compromises for the price. Some owners find the diver's extension difficult to open and the bracelet adjustment challenging, though manageable. On balance, owners and reviewers rate the Seiko Prospex Sea PADI Special Edition highly for its build quality and striking dial design at its price point.

Undone Basecamp Gmt

The Undone Basecamp Gmt is widely praised for its vintage military aesthetic, comfortable 40mm case, and excellent value under $300, with reviewers noting its smooth, precise bidirectional bezel. Owners and reviewers consistently flag the Lexan polycarbonate crystal as a concern for long-term scratch resistance. The watch uses a Seiko NH34 automatic movement, and while its water resistance is listed as 50 meters, it is reportedly tested to 100 meters. One forum user points out that the orange arrow hand indicates the 12-hour time, not the 24-hour GMT function. Overall, owners and reviewers rate the Undone Basecamp Gmt highly for its versatile vintage design and strong value proposition.

At a glance

13 of 29 specs differ
Diameter
Prospex Sea PADI Special Edition41.7mm
Basecamp Gmt40mm
Power Reserve
Prospex Sea PADI Special Edition41h
Basecamp Gmt
Water Resistance
Prospex Sea PADI Special Edition200m
Basecamp Gmt100m
MSRP
Prospex Sea PADI Special Edition$650
Basecamp Gmt$480

Full specifications

Case

6 specs
Category
Diver
Diameter
41.7mm
40mm
Thickness
12.3mm
15mm
Lug-to-Lug
49.5mm
0mm
Lug Width
20mm
0mm
Water Resistance
200m
100m

Crystal & Dial

3 specs
Crystal
Hardlex
Dial Color
Lume
LumiBrite on hands, index(es) and bezel
None

Movement

3 specs
Caliber
Seiko 4R35
Seiko NH34
Power Reserve
41h
0h
Jewels
23
0

Pricing

1 specs
MSRP
$650
$480
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