Side by side

MKII Project 300vsSeiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition

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.

MKII Project 300

Owners widely praise the MKII Project 300 for its balanced aesthetic, with one owner noting its lume "glows like a torch." Reviewers highlight its design as a dive watch inspired by the Omega Seamaster 300, emphasizing high legibility with a bold yet balanced appearance. One owner found the 41.25mm case fit their wrist perfectly. Overall, owners and reviewers rate the MKII Project 300 highly for its striking lume and well-proportioned dive watch design.

From video reviewers

The 39.5mm case size fits most wrists well. The watch offers 200M water resistance. Reviewers did not reach a consensus on any weaknesses or points of disagreement.

Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition

Owners widely praise the Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition for its refined presence and intricate dial patterns, with some favoring its unique red dial and steel bezel over other Speedtimer models. However, some owners criticize the 24-hour subdial as useless, the date window as recessed, and the stock bracelet as difficult to fit, while others find the pushers stick out too much. One owner notes the $995 price point is high for the 6R55 movement, suggesting a lower range, though others appreciate the Seiko finishing and charm. On balance, owners rate the Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition well for its unique aesthetic and finishing, despite some functional and value concerns.

At a glance

13 of 29 specs differ
Diameter
Project 30041.25mm
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition42mm
Power Reserve
Project 300
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition45h
Water Resistance
Project 300300m
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition100m
MSRP
Project 300$1,995
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition$2,500

Full specifications

Case

5 specs
Category
Chronograph
Diameter
41.25mm
42mm
Thickness
13.45mm
14.6mm
Lug-to-Lug
48mm
49.5mm
Water Resistance
300m
100m

Crystal & Dial

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

Movement

3 specs
Caliber
ETA 2824-2
Seiko 8R48
Power Reserve
45h
Jewels
0
34

Pricing

1 specs
MSRP
$1,995
$2,500
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