Side by side

Bremont ionBirdvsZelos Spearfish 3

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

ionBird
BremontionBird
MSRP $5,800
Spearfish 3
ZelosSpearfish 3
MSRP $749

At a glance

10 of 29 specs differ
Diameter
ionBird43mm
Spearfish 340mm
Power Reserve
ionBird40h
Spearfish 340h
Water Resistance
ionBird
Spearfish 3200m
MSRP
ionBird$5,800
Spearfish 3$749

Full specifications

Case

7 specs
Category
Pilot
Diver
Diameter
43mm
40mm
Thickness
11.5mm
Lug-to-Lug
40mm
Lug Width
20mm
Material
Titanium
316L Stainless Steel
Water Resistance
200m

Crystal & Dial

1 specs
Dial Color
Regular length (15cm - 19cm wrist size)
Diver - Forged Carbon

Movement

1 specs
Caliber
La Joux-Perret G100

Pricing

1 specs
MSRP
$5,800
$749

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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.

Zelos Spearfish 3

The Zelos Spearfish 3 is widely praised for its exceptional finishing, with razor-sharp polish and flawless brushed transitions that owners feel exceed its price point. The 40mm case is noted for its wearability, and the La Joux-Perret G100 movement offers a 68-hour power reserve, with reported accuracy averaging +2.6 seconds per day. Reviewers highlight the exceptionally smooth bi-directional bezel and a tool-less micro-adjustment clasp described as best-in-class among microbrands. The sapphire sandwich construction and lumed bezel are also cited as desirable features. Overall, owners and reviewers rate the Zelos Spearfish 3 highly for its outstanding finishing and value at its price point.

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