Side by side

Orient AC0Q Diver II LEvsUnimatic Modello Quattro UC4 Classic Time Only

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.

Orient AC0Q Diver II LE

The Orient AC0Q Diver II LE is widely regarded as strong value, with owners appreciating its sapphire crystal, solid 200m water resistance, and dependable F6722 automatic movement. The 39.9mm case pairs with a redesigned dial featuring arrow and sword hands and applied markers in a Kamasu-style layout—a change that splits the community, with some preferring the original's simpler design aesthetic. Overall, owners rate the AC0Q Diver II LE highly for its sapphire crystal and reliable movement at competitive grey market pricing.

Unimatic Modello Quattro UC4 Classic Time Only

The Unimatic Modello Quattro UC4 Classic Time Only features a robust 40mm black DLC case, 13.7mm to 13.9mm thick, with drilled lugs and a fixed steel bezel that balances beefiness with wearability. Reviewers note improved crown action and refinement over earlier models, with a flat sapphire crystal. Its sandwich dial reveals Super-LumiNova BG W9 beneath cut-out indexes, paired with a Seiko NH35A automatic movement. While the movement is considered robust and reliable, one reviewer expressed a preference for a Sellita caliber given the watch's heft. On balance, reviewers find the Unimatic Modello Quattro UC4 Classic Time Only to be a well-refined and wearable tool watch with a distinct military character.

At a glance

10 of 29 specs differ
Diameter
AC0Q Diver II LE39.9mm
Modello Quattro UC4 Classic Time Only40mm
Power Reserve
AC0Q Diver II LE
Modello Quattro UC4 Classic Time Only
Water Resistance
AC0Q Diver II LE200m
Modello Quattro UC4 Classic Time Only300m
MSRP
AC0Q Diver II LE$395
Modello Quattro UC4 Classic Time Only$655

Full specifications

Case

6 specs
Diameter
39.9mm
40mm
Thickness
12.8mm
0mm
Lug-to-Lug
46.5mm
0mm
Lug Width
20mm
0mm
Material
Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

2 specs
Crystal
Sapphire
Dial Color
Matte black

Movement

1 specs
Caliber
Orient F6722
Seiko NH35

Pricing

1 specs
MSRP
$395
$655
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