Side by side

Bremont ionBirdvsSeiko Diamond Collection

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

ionBird
BremontionBird
MSRP $5,800
Diamond Collection
SeikoDiamond Collection
MSRP $525

At a glance

11 of 29 specs differ
Diameter
ionBird43mm
Diamond Collection30mm
Power Reserve
ionBird40h
Diamond Collection40h
Water Resistance
ionBird
Diamond Collection50m
MSRP
ionBird$5,800
Diamond Collection$525

Full specifications

Case

7 specs
Category
Pilot
Dress
Diameter
43mm
30mm
Thickness
6.3mm
Lug-to-Lug
36.5mm
Lug Width
5mm
Material
Titanium
Stainless Steel
Water Resistance
50m

Crystal & Dial

1 specs
Dial Color
Regular length (15cm - 19cm wrist size)
Black

Movement

2 specs
Caliber
7N01
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$5,800
$525

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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 Diamond Collection

The Seiko Diamond Collection is widely praised by owners for its stunning beauty, featuring 14 diamonds, a mother-of-pearl dial, and a two-tone color scheme. Reviewers note its dial is difficult to capture in photos and that its fit and finish suggest excellent value, especially when purchased on sale. One owner describes the gold plating on the bracelet showing some fading from desk work, and its gold tone may not suit all tastes. Overall, owners rate the Seiko Diamond Collection highly for its striking aesthetics and perceived value.

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