Which is cheaper, the Boldr Blastoise or the Spinnaker Bradner GMT?

At MSRP the Spinnaker Bradner GMT is the cheaper of the two at $299, against $449 for the Boldr Blastoise — a $150 gap before any retailer discounting.

Which is bigger, the Boldr Blastoise or the Spinnaker Bradner GMT?

The Spinnaker Bradner GMT 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 Spinnaker Bradner GMT?

The Boldr Blastoise is rated to 200m versus 180m for the Spinnaker Bradner GMT.

What movement does the Boldr Blastoise run compared to the Spinnaker Bradner GMT?

Both watches run automatic movements — the Boldr Blastoise uses the Seiko (SII) NH37 and the Spinnaker Bradner GMT uses the Seiko NH34A.

Side by side

Boldr BlastoisevsSpinnaker Bradner GMT

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

Boldr Blastoise

blastoise

MSRP $449

Spinnaker Bradner GMT

bradner-gmt-automatic-abbott-brown-sp-5121-22

MSRP $299

At a glance

11 of 29 specs differ

Diameter

Blastoise40mm

Bradner GMT42mm

Power Reserve

Blastoise40h

Bradner GMT40h

Water Resistance

Blastoise200m

Bradner GMT180m

MSRP

Blastoise$449

Bradner GMT$299

Full specifications

Case

7 specs

Crystal & Dial

2 specs

Dial Color

Blastoise

Brown

Lume

Super-LumiNova

None

Movement

1 specs

Caliber

Seiko (SII) NH37

Seiko NH34A

Pricing

1 specs

MSRP

$449

$299

Follow this matchup

Get a note when Boldr Blastoise vs Spinnaker Bradner GMT gets more votes, a community discussion, or a price drop. No account needed.

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.

Balticmicro

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.

Boldr CharizardvsSpinnaker Bradner GMT Baltic Aquascaphe ClassicvsSpinnaker Bradner GMT Baltic Aquascaphe Dual-CrownvsSpinnaker Bradner GMT Baltic Aquascaphe BronzevsSpinnaker Bradner GMT Boldr BlastoisevsIslander JFK Automatic GMT Watch with Batman Dial #ISL-338 Boldr BlastoisevsIslander Automatic GMT Dive Watch with Blue Waffle Dial #ISL-214

Edit this comparison Add another watch Explore more 39–43mm watches

Boldr BlastoisevsSpinnaker Bradner GMT

At a glance

Full specifications

Follow this matchup

More watches worth a look

Aquascaphe Classic

Islander JFK Automatic GMT Watch with Batman Dial #ISL-338

Tesei Mille Metri GMT

Fleuss 40 Automatic

HD24 Automatic

Blacktip 200m GMT

Argo

Navygraf Marine Nationale GMT Paris

People also compared