Side by side
Boldr BlastoisevsSeiko Prospex Sea The Black Series
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Blastoise40mm
Prospex Sea The Black Series45mm
Power Reserve
Blastoise40h
Prospex Sea The Black Series41h
Water Resistance
Blastoise200m
Prospex Sea The Black Series200m
MSRP
Blastoise$449
Prospex Sea The Black Series$765
Full specifications
Case
4 specsDiameter
40mm
45mm
Thickness
12mm
13.2mm
Lug-to-Lug
49.5mm
47.7mm
Lug Width
20mm
22mm
Crystal & Dial
3 specsAR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Blastoise
Black
Lume
Super-LumiNova
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
Seiko (SII) NH37
4R36
Power Reserve
40h
41h
Jewels
25
24
Pricing
1 specsMSRP
$449
$765
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