Side by side

Seiko Prospex SPEEDTIMERvsStudio Underd0g Full Moon

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

Prospex SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $2,200
Full Moon
Studio Underd0gFull Moon
MSRP $800

At a glance

14 of 29 specs differ
Diameter
Prospex SPEEDTIMER42mm
Full Moon39.5mm
Power Reserve
Prospex SPEEDTIMER40h
Full Moon40h
Water Resistance
Prospex SPEEDTIMER100m
Full Moon
MSRP
Prospex SPEEDTIMER$2,200
Full Moon$800

Full specifications

Case

6 specs
Category
Chronograph
Casual
Diameter
42mm
39.5mm
Thickness
12.9mm
Lug-to-Lug
49.6mm
Lug Width
20mm
Water Resistance
100m

Crystal & Dial

4 specs
Crystal Shape
Curved
Flat
AR Coating
Super-clear coating
Inner
Dial Color
Black
Standard
Lume
LumiBrite on hands and index(es)
None

Movement

3 specs
Caliber
5X83
Type
Quartz
Manual
Jewels
14
25

Pricing

1 specs
MSRP
$2,200
$800

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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.

Seiko Prospex SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER for its unique dial colors and vintage-inspired design, with many appreciating its compact 39mm case size and 100m or 200m water resistance. Reviewers and owners note the V192 solar movement’s power reserve indicator and its reliability, though some owners express a preference for automatic movements. One owner finds the $700 price for a solar quartz model expensive, while another criticizes the €860 price point and desires a thinner case and a bracelet with quick-release or micro-adjustment. On balance, owners and reviewers appreciate the Seiko Prospex SPEEDTIMER for its distinctive aesthetic and versatile wearability, despite some reservations about its price and case thickness.

Studio Underd0g Full Moon

Owners widely praise the Studio Underd0g Full Moon's harmonious creamy dial and its 37mm case, which fits flawlessly. The innovative sapphire disc with numerals is a highlight, though two visible screws holding it are noted as a minor aesthetic drawback. Some owners find the watch overpriced, while others see value in the upgraded Sellita movement under $1k. Lume is surprisingly good, and the included NATO strap is preferred by some over the leather. Accuracy ranges from +1/+2 seconds per day to about -6 seconds per day. On balance, owners rate the Studio Underd0g Full Moon highly for its versatile dial and well-fitting case at the price point.

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