Side by side

Bremont ionBirdvsTudor Black Bay 68

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

ionBird
BremontionBird
MSRP $5,800
Black Bay 68
TudorBlack Bay 68
MSRP $5,475

At a glance

18 of 29 specs differ
Diameter
ionBird43mm
Black Bay 6843mm
Power Reserve
ionBird40h
Black Bay 6870h
Water Resistance
ionBird
Black Bay 68200m
MSRP
ionBird$5,800
Black Bay 68$5,475

Full specifications

Case

8 specs
Category
Pilot
Diver
Thickness
13.6mm
Lug-to-Lug
46mm
Lug Width
22mm
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)
Blue

Movement

6 specs
Caliber
MT5601-U
Beat Rate
28,800 vph
0 vph
Power Reserve
40h
70h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$5,800
$5,475

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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 68

The Tudor Black Bay 68 is praised for its METAS Master Chronometer-certified MT5601-U movement, which provides superior accuracy of -2/+4 seconds per day and a 70-hour power reserve. Reviewers highlight its comfortable 13.6mm thickness and the appeal of the Tudor blue dial with a matte black bezel insert. The watch features a brushed and polished 43mm case, a domed sapphire crystal, and a bracelet without faux rivets. On balance, reviewers find the Tudor Black Bay 68 a sensible, larger vintage-inspired diver with excellent timekeeping.

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