Side by side

Seestern S443 Column Wheel ChronographvsSeiko Prospex Sea

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

Prospex Sea
SeikoProspex Sea
MSRP $900

At a glance

18 of 29 specs differ
Diameter
S443 Column Wheel Chronograph40mm
Prospex Sea41mm
Power Reserve
S443 Column Wheel Chronograph45hh
Prospex Sea70h
Water Resistance
S443 Column Wheel Chronograph50m
Prospex Sea200m
MSRP
S443 Column Wheel Chronograph$10
Prospex Sea$900

Full specifications

Case

6 specs
Category
Chronograph
Diver
Diameter
40mm
41mm
Thickness
13mm
12.3mm
Lug-to-Lug
48.6mm
46.9mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
200m

Crystal & Dial

5 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Pink
Black
Indices
3D
Applied
Lume
Super BGW9
LumiBrite on hands, index(es) and bezel

Movement

6 specs
Caliber
Seagull ST1901
6R35
Type
Manual
Automatic
Beat Rate
3 vph
28,800 vph
Power Reserve
45hh
70h
Jewels
21
24
Complications
Chronograph, Column Wheel
None

Pricing

1 specs
MSRP
$10
$900

Follow this matchup

Get a note when Seestern S443 Column Wheel Chronograph vs Seiko Prospex Sea gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

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

Seestern S443 Column Wheel Chronograph

Owners widely praise the Seestern S443 Column Wheel Chronograph for its affordable mechanical chronograph movement with a column wheel, derived from the Venus 175. Some owners appreciate the watch's overall aesthetic, with one noting a preference for the black-yellow variant. The ST19 movement's execution is generally well-regarded, though one owner found the chronograph minute counter could stick, a common issue that may require a watchmaker, while another noted sticky chrono pushers after patina development on the bronze case. The ST19 movement lacks an hours totalizer, and its assembly is not as refined as luxury timepieces, though comparable to entry-level automatics. One owner finds the "hand winding" script font on the dial to be a design flaw. Overall, owners rate the Seestern S443 Column Wheel Chronograph highly for its value as a column wheel chronograph, despite minor assembly and functional quirks.

Seiko Prospex Sea

Owners widely praise the Seiko Prospex Sea for its excellent lume, robust build, and value, with many highlighting the comfortable 4 o'clock crown and reliable movements. Reviewers note impressive case finishing and attractive dials, with specific models lauded for their gradient blue designs and smooth bezel actions. Accuracy figures vary, with one owner reporting +9 seconds/day after demagnetization, while others find the watches to be good first "proper" watches. Some owners find the stock rubber straps uncomfortable or the overall size substantial on smaller wrists. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its combination of strong dive watch functionality and appealing design at its price point.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.