Side by side

CWC T20 General Service Quartz WatchvsSeiko Prospex Sea

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

T20 General Service Quartz Watch
CWCT20 General Service Quartz Watch
MSRP $249
Prospex Sea
SeikoProspex Sea
MSRP $795

At a glance

12 of 29 specs differ
Diameter
T20 General Service Quartz Watch38mm
Prospex Sea34mm
Power Reserve
T20 General Service Quartz Watch40h
Prospex Sea40h
Water Resistance
T20 General Service Quartz Watch50m
Prospex Sea200m
MSRP
T20 General Service Quartz Watch$249
Prospex Sea$795

Full specifications

Case

6 specs
Category
Field
Diver
Diameter
38mm
34mm
Thickness
12mm
8.7mm
Lug-to-Lug
42mm
40.8mm
Lug Width
18.5mm
16mm
Water Resistance
50m
200m

Crystal & Dial

4 specs
Crystal
Acrylic
Sapphire
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
CWC T20 General Service Quartz Watch
Black
Lume
Super-LumiNova
LumiBrite on hands and index(es)

Movement

1 specs
Caliber
Ronda 515
6N01

Pricing

1 specs
MSRP
$249
$795

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What people say

Owners + reviewers, side by side

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

CWC T20 General Service Quartz Watch

The CWC T20 General Service Quartz Watch is widely praised for its simple, clean, and classic look, with owners considering it a classy and comfortable field watch. Its 38mm tonneau case is seen by some as a cool retro piece representative of original MOD specifications, though others find this size too small for larger wrists. The watch is noted for keeping accurate time, with one owner reporting it as practical for everyday wear. It features a stainless steel case, sapphire crystal, and a Ronda 715 movement. A limitation mentioned is the fixed lugs, which restrict strap versatility. Overall, owners rate the CWC T20 General Service Quartz Watch highly for its classic military-inspired aesthetic and reliable timekeeping at an affordable price.

Seiko Prospex Sea

Owners widely praise the Seiko Prospex Sea for its excellent value, robust build, and superb lume, with many appreciating its comfortable wearability due to its case shape and lug-to-lug distance. Reviewers consistently highlight its impressive finishing and classic dive watch design, often noting the bright LumiBrite lume. Some owners find the watch to be large, thick, and heavy, while others consider it the perfect size, indicating a split opinion on wearability for smaller wrists. The power reserve from some movements is noted as less than newer variants, and the clasp quality receives mixed feedback. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its exceptional finishing and value proposition in the dive watch market.

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