Side by side

Oblvlo BLM ZBvsSeiko 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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BLM ZB
OblvloBLM ZB
MSRP $315
Prospex Sea The Black Series
SeikoProspex Sea The Black Series
MSRP $765
Buy from Oblvlo ↗
Buy used on eBay ↗
Buy from Seiko ↗
Buy used on eBay ↗

At a glance

12 of 29 specs differ
Diameter
BLM ZB41mm
Prospex Sea The Black Series45mm
Power Reserve
BLM ZB40h
Prospex Sea The Black Series41h
Water Resistance
BLM ZB50m
Prospex Sea The Black Series200m
MSRP
BLM ZB$315
Prospex Sea The Black Series$765

Full specifications

Case

6 specs
Category
Sport
Diver
Diameter
41mm
45mm
Thickness
12mm
13.2mm
Lug-to-Lug
46mm
47.7mm
Lug Width
20mm
22mm
Water Resistance
50m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
Super-LumiNova
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
—
4R36
Power Reserve
40h
41h
Jewels
25
24

Pricing

1 specs
MSRP
$315
$765
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