Side by side

CWC T20 General Service Quartz WatchvsSeiko Prospex SPEEDTIMER

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 SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $725
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 SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER's gorgeous, unique red dial and vintage-inspired design, finding it a sturdy and reliable everyday watch. Some owners, however, question the value proposition at around $700 for a solar quartz model, citing its 13-15mm thickness and the 24-hour subdial as drawbacks. Accuracy figures vary, with one owner reporting +1/+2 seconds per day, while another notes the V192 solar movement offers a six-month power reserve. Overall, owners and reviewers find the Seiko Prospex SPEEDTIMER a capable and versatile chronograph, with its striking dial and everyday wearability being the most frequently cited strengths.

From video reviewers

The Seiko Prospex SPEEDTIMER's solar movement provides reliable power without battery replacements and accurate timekeeping, with a claimed accuracy of ±15 seconds per month. A notable trade-off is the watch's slightly thicker profile and somewhat lacking lume brightness. Reviewers disagree on whether the bezel action is smooth and clicky, with one reviewer praising it and the other not mentioning it.

At a glance

13 of 29 specs differ
Diameter
T20 General Service Quartz Watch38mm
Prospex SPEEDTIMER39mm
Power Reserve
T20 General Service Quartz Watch40h
Prospex SPEEDTIMER40h
Water Resistance
T20 General Service Quartz Watch50m
Prospex SPEEDTIMER100m
MSRP
T20 General Service Quartz Watch$249
Prospex SPEEDTIMER$725

Full specifications

Case

6 specs
Category
Field
Chronograph
Diameter
38mm
39mm
Thickness
12mm
13.3mm
Lug-to-Lug
42mm
45.5mm
Lug Width
18.5mm
20mm
Water Resistance
50m
100m

Crystal & Dial

5 specs
Crystal
Acrylic
Sapphire
Crystal Shape
Flat
Curved
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
V192

Pricing

1 specs
MSRP
$249
$725
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