Which is cheaper, the Boldr Blastoise or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

At MSRP the Boldr Blastoise is the cheaper of the two at $449, against $2,500 for the Seiko Prospex SPEEDTIMER Mechanical Chronograph — a $2,051 gap before any retailer discounting.

Which is bigger, the Boldr Blastoise or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Seiko Prospex SPEEDTIMER Mechanical Chronograph wears larger at 42mm versus 40mm for the Boldr Blastoise — a 2mm difference across the dial.

Which has better water resistance, the Boldr Blastoise or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Boldr Blastoise is rated to 200m versus 10m for the Seiko Prospex SPEEDTIMER Mechanical Chronograph.

Which has a longer power reserve, the Boldr Blastoise or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Seiko Prospex SPEEDTIMER Mechanical Chronograph carries a 45-hour power reserve against 40 hours on the Boldr Blastoise.

What movement does the Boldr Blastoise run compared to the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

Both watches run automatic movements — the Boldr Blastoise uses the Seiko (SII) NH37 and the Seiko Prospex SPEEDTIMER Mechanical Chronograph uses the 8R48.

Side by side

Boldr BlastoisevsSeiko Prospex SPEEDTIMER Mechanical Chronograph

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

Boldr Blastoise

blastoise

MSRP $449

Seiko Prospex SPEEDTIMER Mechanical Chronograph

srq047j1

MSRP $2,500

At a glance

12 of 29 specs differ

Diameter

Blastoise40mm

Prospex SPEEDTIMER Mechanical Chronograph42mm

Power Reserve

Blastoise40h

Prospex SPEEDTIMER Mechanical Chronograph45h

Water Resistance

Blastoise200m

Prospex SPEEDTIMER Mechanical Chronograph100m

MSRP

Blastoise$449

Prospex SPEEDTIMER Mechanical Chronograph$2,500

Full specifications

Case

4 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

Blastoise

Black

Lume

Super-LumiNova

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

Seiko (SII) NH37

8R48

Power Reserve

40h

45h

Jewels

Pricing

1 specs

MSRP

$449

$2,500

Follow this matchup

Get a note when Boldr Blastoise vs Seiko Prospex SPEEDTIMER Mechanical Chronograph gets more votes, a community discussion, or a price drop. No account needed.

Keep exploring