Side by side

Aigi Watches 1RSUvsSeiko Prospex Sea The Black Series

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

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1RSU
Aigi Watches1RSU
MSRP $910
See the full 1RSU
Prospex Sea The Black Series
SeikoProspex Sea The Black Series
MSRP $765
See the full Prospex Sea The Black Series
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Buy used on eBay ↗
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At a glance

11 of 29 specs differ
Diameter
1RSU40mm
Prospex Sea The Black Series45mm
Power Reserve
1RSU40h
Prospex Sea The Black Series41h
Water Resistance
1RSU200m
Prospex Sea The Black Series200m
MSRP
1RSU$910
Prospex Sea The Black Series$765

Full specifications

Case

5 specs
Category
—
Diver
Diameter
40mm
45mm
Thickness
12mm
13.2mm
Lug-to-Lug
46mm
47.7mm
Lug Width
20mm
22mm

Crystal & Dial

2 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Miyota 9075
Seiko 4R36
Power Reserve
40h
41h
Jewels
25
24

Pricing

1 specs
MSRP
$910
$765
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