Side by side

Bremont ionBirdvsTudor Black Bay 58

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

ionBird
BremontionBird
MSRP $5,800
Black Bay 58
TudorBlack Bay 58
MSRP $5,350

At a glance

19 of 29 specs differ
Diameter
ionBird43mm
Black Bay 5839mm
Power Reserve
ionBird40h
Black Bay 5865h
Water Resistance
ionBird
Black Bay 58200m
MSRP
ionBird$5,800
Black Bay 58$5,350

Full specifications

Case

9 specs
Category
Pilot
Diver
Diameter
43mm
39mm
Thickness
11.7mm
Lug-to-Lug
46mm
Lug Width
20mm
Material
Titanium
Stainless Steel
Finish
Brushed and polished
Polished + Satin
Water Resistance
200m
Caseback
Solid
Solid screw-down

Crystal & Dial

3 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Regular length (15cm - 19cm wrist size)
Black

Movement

6 specs
Caliber
MT5400-U
Beat Rate
28,800 vph
0 vph
Power Reserve
40h
65h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$5,800
$5,350

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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.

Tudor Black Bay 58

The Tudor Black Bay 58 is widely praised for its superb wearing experience, perfect proportions, and comfortable wearability, with owners anticipating it becoming a Tudor classic. Reviewers highlight its substantial, rugged build quality and significant value, rivaling more expensive timepieces. One owner notes the clasp's sharp shield as a minor annoyance.

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