Side by side

Seiko Prospex SPEEDTIMER MechanicalvsLongines LONGINES SPIRIT FLYBACK TITANIUM

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

Prospex SPEEDTIMER Mechanical
SeikoProspex SPEEDTIMER Mechanical
MSRP $995
LONGINES SPIRIT FLYBACK TITANIUM
LonginesLONGINES SPIRIT FLYBACK TITANIUM
MSRP $5,900

At a glance

14 of 29 specs differ
Diameter
Prospex SPEEDTIMER Mechanical39.5mm
LONGINES SPIRIT FLYBACK TITANIUM42mm
Power Reserve
Prospex SPEEDTIMER Mechanical72h
LONGINES SPIRIT FLYBACK TITANIUM40h
Water Resistance
Prospex SPEEDTIMER Mechanical200m
LONGINES SPIRIT FLYBACK TITANIUM100m
MSRP
Prospex SPEEDTIMER Mechanical$995
LONGINES SPIRIT FLYBACK TITANIUM$5,900

Full specifications

Case

6 specs
Diameter
39.5mm
42mm
Thickness
12mm
17mm
Lug-to-Lug
44.5mm
49.5mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium
Water Resistance
200m
100m

Crystal & Dial

4 specs
Crystal Shape
Curved
Flat
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
Anthracite
Lume
LumiBrite on hands and index(es)
None

Movement

3 specs
Caliber
6R55
L791.4
Power Reserve
72h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$995
$5,900

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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 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.

LONGINES SPIRIT FLYBACK TITANIUM

The LONGINES SPIRIT FLYBACK TITANIUM is widely praised for its luxurious finishing on titanium, attractive anthracite dial with gold and red accents, and precise COSC-certified L791.4 movement. Owners and reviewers consistently highlight its value as a flyback chronograph with a 68-hour power reserve and 100-meter water resistance. However, its 17mm case thickness is a significant concern for wearability, particularly under sleeves, with some suggesting alternative strap options. On balance, owners and reviewers rate the LONGINES SPIRIT FLYBACK TITANIUM highly for its finishing and value, despite the noted thickness.

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