Side by side

Bremont Altitude ChronographvsLongines LONGINES SPIRIT FLYBACK PROTOTYPE

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

Altitude Chronograph
BremontAltitude Chronograph
MSRP $6,300
LONGINES SPIRIT FLYBACK PROTOTYPE
LonginesLONGINES SPIRIT FLYBACK PROTOTYPE
MSRP $7,400

At a glance

7 of 29 specs differ
Diameter
Altitude Chronograph42mm
LONGINES SPIRIT FLYBACK PROTOTYPE42mm
Power Reserve
Altitude Chronograph40h
LONGINES SPIRIT FLYBACK PROTOTYPE40h
Water Resistance
Altitude Chronograph100m
LONGINES SPIRIT FLYBACK PROTOTYPE100m
MSRP
Altitude Chronograph$6,300
LONGINES SPIRIT FLYBACK PROTOTYPE$7,400

Full specifications

Case

4 specs
Thickness
14.7mm
17mm
Lug-to-Lug
49.5mm
Lug Width
14.7mm
22mm
Material
316L Stainless Steel (DLC coated)
Stainless Steel

Crystal & Dial

1 specs
Dial Color
Silver
Green

Movement

1 specs
Caliber
BE-50AE
L791.4

Pricing

1 specs
MSRP
$6,300
$7,400

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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 Altitude Chronograph

Owners note faint marks on the case sides and back, with minor wear and creasing on the strap. Reviewers flag the "DANGER EJECTION SEAT" wordmark on the dial as a divisive design choice that disrupts the MB series' usual stark tone, though they praise the improved smoothness and click precision of the Roto Click rotating bezel. On balance, the Bremont Altitude Chronograph elicits mixed reactions, with design elements like the dial text being a point of contention for reviewers.

LONGINES SPIRIT FLYBACK PROTOTYPE

Owners widely praise the Longines Spirit Flyback Prototype for its attractive finishing, COSC-certified movement, and value as a flyback chronograph. Reviewers highlight its refined 39.5mm case and simplified dial, while some owners appreciate the reduced thickness and improved wearability compared to larger variants, with a lug-to-lug distance noted as potentially long for smaller wrists. The watch features a 68-hour power reserve and a bespoke L791.4 movement. However, the case thickness is a consistent point of discussion, with multiple sources citing 17mm, though some reviewers suggest thoughtful design makes it wear closer to 13.5-14mm. Owners are split on the dial's aesthetic, with some preferring previous configurations with gold subdial rings and concentric textures over the current flat matte dial and cut-off numbers. The leather strap is also noted as stiff and pinching.

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