Side by side

Bremont Altitude Perpetual Calendar GMTvsBremont ionBird

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

Altitude Perpetual Calendar GMT
BremontAltitude Perpetual Calendar GMT
MSRP $38,450
ionBird
BremontionBird
MSRP $5,800

At a glance

6 of 29 specs differ
Diameter
Altitude Perpetual Calendar GMT42mm
ionBird43mm
Power Reserve
Altitude Perpetual Calendar GMT40h
ionBird40h
Water Resistance
Altitude Perpetual Calendar GMT
ionBird
MSRP
Altitude Perpetual Calendar GMT$38,450
ionBird$5,800

Full specifications

Case

4 specs
Category
GMT
Pilot
Diameter
42mm
43mm
Thickness
12.65mm
Lug Width
22mm

Crystal & Dial

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

Pricing

1 specs
MSRP
$38,450
$5,800

Follow this matchup

Get a note when Bremont Altitude Perpetual Calendar GMT vs Bremont ionBird gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Bremont Altitude Perpetual Calendar GMT

The Bremont Altitude Perpetual Calendar GMT is a highly exclusive piece, with one owner noting its $44,000 price point raises questions about its target audience and suggesting it may be a limited production showpiece. Reviewers highlight its refined Trip-Tick case, now featuring softer curves, a 42mm diameter, and a 12.23mm thickness in grade 2 titanium, though the oversized crowns are flagged as a potential drawback. Overall, owners and reviewers acknowledge the Bremont Altitude Perpetual Calendar GMT as a distinctive, albeit niche, high-complication offering with a notable case refinement.

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.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.