Side by side

Bremont ionBirdvsSeiko Alpinist

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

ionBird
BremontionBird
MSRP $5,800
Alpinist
SeikoAlpinist
MSRP $750

At a glance

14 of 29 specs differ
Diameter
ionBird43mm
Alpinist39.5mm
Power Reserve
ionBird40h
Alpinist70h
Water Resistance
ionBird
Alpinist200m
MSRP
ionBird$5,800
Alpinist$750

Full specifications

Case

7 specs
Category
Pilot
Field
Diameter
43mm
39.5mm
Thickness
13.2mm
Lug-to-Lug
46.4mm
Lug Width
20mm
Material
Titanium
Stainless Steel
Water Resistance
200m

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Regular length (15cm - 19cm wrist size)
Black
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
6R35
Power Reserve
40h
70h
Jewels
25
24

Pricing

1 specs
MSRP
$5,800
$750

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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.

Seiko Alpinist

Owners widely praise the Seiko Prospex Land Mechanical for its durability, accuracy, and value, with many appreciating its versatile style and useful day-date complication. Some owners highlight the 70-hour power reserve and 20 bar water resistance as significant benefits. However, opinions are divided on its size and thickness, with some finding it too large and heavy for a field watch, while others consider it a perfect or comfortable fit, especially at 38mm. There is also disagreement regarding the crystal type, with some criticizing the Hardlex while others appreciate the sapphire. Overall, owners rate the Seiko Prospex Land Mechanical highly for its robust performance and good value, despite differing views on its dimensions.

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