Side by side

Astor + Banks ChronovsSeiko Prospex Sea

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

Chrono
Astor + BanksChrono
MSRP $575
Prospex Sea
SeikoProspex Sea
MSRP $595

At a glance

13 of 29 specs differ
Diameter
Chrono44mm
Prospex Sea41.7mm
Power Reserve
Chrono40h
Prospex Sea41h
Water Resistance
Chrono100m
Prospex Sea200m
MSRP
Chrono$575
Prospex Sea$595

Full specifications

Case

6 specs
Category
Chronograph
Diver
Diameter
44mm
41.7mm
Thickness
12.3mm
Lug-to-Lug
49.5mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
100m
200m

Crystal & Dial

2 specs
Crystal
Sapphire
Hardlex
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
Ronda 5050.B
4R35
Type
Quartz
Automatic
Power Reserve
40h
41h
Jewels
25
23

Pricing

1 specs
MSRP
$575
$595

Follow this matchup

Get a note when Astor + Banks Chrono 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.

Astor + Banks Chrono

Owners widely praise the Astor + Banks Chrono for its sporty design, wrist-friendly 38.5mm size, and enthusiast-friendly price starting at $525. One reviewer notes the date numeral is consistently half in shadow due to deep-set placement. On balance, owners and reviewers rate the Astor + Banks Chrono highly for its design and value at the price point.

Seiko Prospex Sea

Owners and reviewers widely praise the Seiko Prospex Sea for its excellent value, robust build, and superior lume, with many noting its comfortable wearability and faithful design recreations. Some owners report the watch can feel big, thick, and heavy on smaller wrists, while others find the sizing perfect. The bezel action is frequently highlighted as smooth and precise, often exceeding that of less expensive models. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its impressive finishing and value proposition.

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.