Side by side

Sheffield Allsport Diver 1vsSeiko Monster

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

Allsport Diver 1
SheffieldAllsport Diver 1
Monster
SeikoMonster
MSRP $550
What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Sheffield Allsport Diver 1

Owners widely praise the Sheffield Allsport Diver 1 for its superb quality and sturdiness at an affordable price, with many calling it a hit and a no-brainer purchase. The blue dial is a particular highlight, and the watch is noted to resist scratches well despite heavy use. One owner dislikes the lack of a quick-set date, finding it cumbersome to adjust. Overall, owners rate the Sheffield Allsport Diver 1 highly for its surprising quality and appearance at its price point.

Seiko Monster

Owners widely praise the Seiko Prospex Sea for its excellent value, robust build, and superb lume, with many noting its comfortable wearability. Reviewers consistently highlight its impressive finishing and classic dive watch design, often comparing it favorably to older models. Some owners find the size substantial, with one noting it as big, thick, and heavy on a 6.5-inch wrist, while others find it perfect. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its exceptional value and robust, classic dive watch design.

At a glance

11 of 29 specs differ
Diameter
Allsport Diver 140mm
Monster42.4mm
Power Reserve
Allsport Diver 1
Monster41h
Water Resistance
Allsport Diver 1200m
Monster200m
MSRP
Allsport Diver 1
Monster$550

Full specifications

Case

4 specs
Diameter
40mm
42.4mm
Thickness
13mm
13.4mm
Lug-to-Lug
48mm
49.4mm
Lug Width
20mm

Crystal & Dial

3 specs
Crystal
Sapphire
Hardlex
Dial Color
Blue
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Seiko NH35
4R36
Power Reserve
41h
Jewels
25
24

Pricing

1 specs
MSRP
$550
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