Which is cheaper, the Bremont ionBird or the Longines PRIMALUNA?

At MSRP the Longines PRIMALUNA is the cheaper of the two at $1,950, against $5,800 for the Bremont ionBird — a $3,850 gap before any retailer discounting.

Which is bigger, the Bremont ionBird or the Longines PRIMALUNA?

The Bremont ionBird wears larger at 43mm versus 30mm for the Longines PRIMALUNA — a 13mm difference across the dial.

What movement does the Bremont ionBird run compared to the Longines PRIMALUNA?

The Bremont ionBird runs a automatic caliber, while the Longines PRIMALUNA runs a quartz (L257.2).

Side by side

Bremont ionBirdvsLongines PRIMALUNA

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

Bremont ionBird

IONBIRDMODEL12020-R-S

MSRP $5,800

Longines PRIMALUNA

L8.142.4.97.6

MSRP $1,950

At a glance

22 of 29 specs differ

Diameter

ionBird43mm

PRIMALUNA30mm

Power Reserve

ionBird40h

PRIMALUNA40h

Water Resistance

ionBird—

PRIMALUNA30m

MSRP

ionBird$5,800

PRIMALUNA$1,950

Full specifications

Case

9 specs

Crystal & Dial

5 specs

Crystal Shape

Flat

—

AR Coating

Inner

Both sides

Dial Color

Regular length (15cm - 19cm wrist size)

Blue

Indices

Applied

Diamond indexes

Lume

None

Super-LumiNova

Movement

7 specs

Caliber

—

L257.2

Type

Automatic

Quartz

Beat Rate

28,800 vph

25,200 vph

Jewels

Hacking

Yes

Hand-winding

Yes

Complications

None

Hours, minutes, seconds and date

Pricing

1 specs

MSRP

$5,800

$1,950

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Bremont ionBird

Owners report the Bremont ionBird is overpriced and features a printed dial with a poorly placed date window at 4:30, which some find visually disruptive. However, some owners suggest its case finishing is superior to competitors. The 43mm titanium Bremont ionBird GMT is powered by a COSC-certified BE-93-2AV automatic movement and retails for $5,795. On balance, owners and reviewers find the Bremont ionBird's date window placement and price point to be significant drawbacks.

A Blog to Watch

Longines PRIMALUNA

Owners widely praise the Longines PRIMALUNA for its attractive style and understated 26.5mm size, with some preferring the automatic for its craftsmanship and heirloom quality. The redesigned 34mm model features an automatic movement, date complication, and polished case design, available in steel or bi-metal with various dial and strap options. Accuracy averages a loss of 1.3 seconds per day across six positions, running 3-4 seconds slower on the wrist, which is within COSC standards. Prices range from EUR 2,850 to EUR 6,600. Overall, owners rate the Longines PRIMALUNA highly for its appealing design and reliable automatic movement.

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