Side by side

Oris Aquis Pro 4000mvsSeestern Sub 300 V4

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

Aquis Pro 4000m
OrisAquis Pro 4000m
MSRP $6,900
Sub 300 V4
SeesternSub 300 V4
MSRP $10

At a glance

18 of 29 specs differ
Diameter
Aquis Pro 4000m49.5mm
Sub 300 V442mm
Power Reserve
Aquis Pro 4000m120 hoursh
Sub 300 V441h
Water Resistance
Aquis Pro 4000m4,000m
Sub 300 V4200m
MSRP
Aquis Pro 4000m$6,900
Sub 300 V4$10

Full specifications

Case

8 specs
Diameter
49.5mm
42mm
Thickness
13mm
Lug-to-Lug
46mm
Lug Width
26mm
20mm
Material
Titanium
316L Stainless Steel
Finish
Brushed + Sandblasted
Water Resistance
4000m
200m
Caseback
Solid screw-down

Crystal & Dial

4 specs
Crystal Shape
Flat
Dial Color
Blue
Orange
Indices
Applied
Lume
None
Japan Lume (blue glow)

Movement

5 specs
Caliber
CALIBRE 400
Seiko NH35A
Beat Rate
4 vph
21,600 vph
Power Reserve
120 hoursh
41h
Jewels
21
24
Complications
Date
GMT, Date

Pricing

1 specs
MSRP
$6,900
$10

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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.

Oris Aquis Pro 4000m

The Oris Aquis Pro 4000m is widely acknowledged as a substantial dive tool, with reviewers and owners alike noting its impressive 49.5mm diameter and 23.4mm to 25mm thickness. Despite its size, the titanium case and comfortable rubber strap contribute to surprisingly good wearability for some, though others find its dimensions impractical for daily wear. The patented Rotation Safety System for the bezel is praised for its intelligence and functionality, while the in-house Calibre 400 movement offers a 120-hour power reserve and a 10-year warranty. One owner notes that the clasp's quick-adjust pushers can be unintentionally activated during watch removal. Overall, owners and reviewers regard the Oris Aquis Pro 4000m as a stunning, albeit chunky, tool watch whose impressive specifications are its primary draw.

Seestern Sub 300 V4

Owners widely praise the Seestern Sub 300 V4 for its terrific fit and finish and surprising little touches at its $179 price, noting top-notch case, dial, bezel, and crystal. The bracelet is considered nice enough for the price point, and the watch is powered by the solid and reliable Seiko NH35 movement. Some owners report that the polished sides of the case show signs of wear. Overall, owners rate the Seestern Sub 300 V4 highly for its excellent case, dial, and bezel finishing at the price.

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