Which is cheaper, the Bremont Altitude Chronograph or the Seiko Prospex LX line?

At MSRP the Seiko Prospex LX line is the cheaper of the two at $5,500, against $6,300 for the Bremont Altitude Chronograph — a $800 gap before any retailer discounting.

Which is bigger, the Bremont Altitude Chronograph or the Seiko Prospex LX line?

The Seiko Prospex LX line wears larger at 44.8mm versus 42mm for the Bremont Altitude Chronograph — a 2.8mm difference across the dial.

Which has better water resistance, the Bremont Altitude Chronograph or the Seiko Prospex LX line?

The Bremont Altitude Chronograph is rated to 100m versus 20m for the Seiko Prospex LX line.

Which has a longer power reserve, the Bremont Altitude Chronograph or the Seiko Prospex LX line?

The Seiko Prospex LX line carries a 72-hour power reserve against 40 hours on the Bremont Altitude Chronograph.

What movement does the Bremont Altitude Chronograph run compared to the Seiko Prospex LX line?

The Bremont Altitude Chronograph runs a automatic caliber (BE-50AE), while the Seiko Prospex LX line runs a spring drive (5R66).

Side by side

Bremont Altitude ChronographvsSeiko Prospex LX line

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

Bremont Altitude Chronograph

alt42-chr-g-ss-si-l-s

MSRP $6,300

Seiko Prospex LX line

snr025j1

MSRP $5,500

At a glance

14 of 29 specs differ

Diameter

Altitude Chronograph42mm

Prospex LX line44.8mm

Power Reserve

Altitude Chronograph40h

Prospex LX line72h

Water Resistance

Altitude Chronograph100m

Prospex LX line200m

MSRP

Altitude Chronograph$6,300

Prospex LX line$5,500

Full specifications

Case

6 specs

Crystal & Dial

3 specs

AR Coating

Inner

Super-clear coating

Dial Color

Silver

Black

Lume

None

LumiBrite on hands and index(es)

Movement

4 specs

Caliber

BE-50AE

5R66

Type

Automatic

Spring Drive

Power Reserve

40h

72h

Jewels

Pricing

1 specs

MSRP

$6,300

$5,500

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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.

A Blog to Watch

WatchUSeek

Seiko Prospex LX line

Owners widely report the dial's blue-green sunburst is phenomenal, and the sapphire glass features blue AR coating. Some owners feel the high price limits discounts and sales, with one AD noting extremely low sales due to the cost. One owner reported DLC peeling off a two-week-old watch, and another noted quality control issues like bezel inserts and fallen second hands. On balance, owners consider the Seiko Prospex LX line a nicely built watch, though pricing led to poor sales and its discontinuation.

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