Louis Erard 2300 Sport ChronographvsLongines Spirit Flyback Prototype

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Louis Erard 2300 Sport Chronograph at true scale

2300 Sport Chronograph

Longines Spirit Flyback Prototype at true scale

Spirit Flyback Prototype

Diameter

44mm

42mm

Lug-to-Lug

n/a

49.5mm

Thickness

n/a

17mm

Water Resistance

50m

100m

highest

Power Reserve

48h

n/a

MSRP

$4,146

lowest

$7,400

Movement

Valjoux 7750

Longines L791.4

Case

6 specs
Diameter
44mm
42mm
Thickness
n/a
17mm
Lug-to-Lug
n/a
49.5mm
Lug Width
n/a
22mm
Material
Titanium
Stainless Steel
Water Resistance
50m
100m

Crystal & Dial

1 specs
Dial Color
n/a
Green

Movement

2 specs
Caliber
Valjoux 7750
Longines L791.4
Power Reserve
48h
0h

Pricing

1 specs
MSRP
$4,146
$7,400
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Reviews

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

Louis Erard 2300 Sport Chronograph

Owners and reviewers highlight the Louis Erard 2300 Sport Chronograph's lightweight titanium case with satin finishing and polished bevels, which makes its 44mm size feel less cumbersome. The watch is noted for its retro-modern aesthetic and unique dial designs, with one owner appreciating the addition of a moon phase complication and its practical alternative to a dress watch. Reviewers point out that its 50m water resistance lags behind modern alternatives, and one found the rainbow minute track too subtle. Overall, owners and reviewers rate the Louis Erard 2300 Sport Chronograph well for its distinctive design and comfortable wearability in titanium at its price point.

Longines Spirit Flyback Prototype

Owners widely praise the Longines Spirit Flyback Prototype for its attractive finishing on the case and dial, COSC-certified L791.4 movement, and overall value as a flyback chronograph. Reviewers note its improved wearability due to a 47.4mm lug-to-lug distance and a thickness that, despite being listed as 17mm, wears closer to 13.5-14mm. However, the 17mm thickness is a significant drawback for some, making it difficult to wear under cuffs, and the leather strap is described as stiff. Owners are split on the dial's simplified look compared to previous models, with some preferring the earlier design elements. On balance, owners and reviewers rate the Longines Spirit Flyback Prototype highly for its refined finishing and value proposition, despite concerns regarding its case thickness.