Side by side

Seiko Prospex SPEEDTIMER MechanicalvsTissot PRX Carbon

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 SPEEDTIMER Mechanical

The Seiko Prospex SPEEDTIMER Mechanical is praised for its visually appealing design and comfortable wearability, with owners frequently using its chronograph function for daily tasks. Reviewers note its clean dial layout and LumiBrite treated hands and markers, and one source highlights the 72-hour power reserve of the 6R55 movement. However, some owners criticize its chronograph functionality and the 24-hour subdial. On balance, owners and reviewers rate the Seiko Prospex SPEEDTIMER Mechanical highly for its daily usability and refined aesthetics.

Tissot PRX Carbon

The Tissot PRX Carbon is widely praised for its unique, stealthy forged carbon aesthetic and lightweight wearability, with many owners considering it a standout within the PRX line. Owners consistently highlight the comfortable, high-quality rubber strap and the appealing forged carbon look. Accuracy is noted as COSC-level, and the Powermatic 80 movement is specifically mentioned as featuring a silicon balance spring. However, legibility is hampered by a textured carbon dial and poor lume, and some owners find the dial too shiny. The $1,150 price point is considered high by some, though others view it as decent value. On balance, owners rate the Tissot PRX Carbon highly for its distinctive lightweight design and comfortable wearability.

At a glance

16 of 29 specs differ
Diameter
Prospex SPEEDTIMER Mechanical39.5mm
PRX Carbon40.5mm
Power Reserve
Prospex SPEEDTIMER Mechanical72h
PRX Carbon80h
Water Resistance
Prospex SPEEDTIMER Mechanical200m
PRX Carbon100m
MSRP
Prospex SPEEDTIMER Mechanical$995
PRX Carbon$1,150

Full specifications

Case

7 specs
Category
Chronograph
Dress
Diameter
39.5mm
40.5mm
Thickness
12mm
11.23mm
Lug-to-Lug
44.5mm
40mm
Lug Width
20mm
12mm
Material
Stainless Steel
Carbon
Water Resistance
200m
100m

Crystal & Dial

5 specs
Crystal Shape
Curved
AR Coating
Anti-reflective coating on inner surface
Yes
Dial Color
Black carbon
Indices
Indexes
Lume
LumiBrite on hands and index(es)
Super-LumiNova ®

Movement

3 specs
Caliber
Seiko 6R55
Tissot Powermatic 80
Power Reserve
72h
80h
Jewels
24
0

Pricing

1 specs
MSRP
$995
$1,150
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