Side by side

AVI-8 P-51 Mustang Blakeslee Meca-Quartz ChronographvsFormex Reef 39.5 mm

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

P-51 Mustang Blakeslee Meca-Quartz Chronograph
AVI-8P-51 Mustang Blakeslee Meca-Quartz Chronograph
MSRP $315
Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230

At a glance

13 of 29 specs differ
Diameter
P-51 Mustang Blakeslee Meca-Quartz Chronograph43mm
Reef 39.5 mm39.5mm
Power Reserve
P-51 Mustang Blakeslee Meca-Quartz Chronograph40h
Reef 39.5 mm56h
Water Resistance
P-51 Mustang Blakeslee Meca-Quartz Chronograph50m
Reef 39.5 mm300m
MSRP
P-51 Mustang Blakeslee Meca-Quartz Chronograph$315
Reef 39.5 mm$2,230

Full specifications

Case

6 specs
Category
Chronograph
Diver
Diameter
43mm
39.5mm
Thickness
13mm
11mm
Lug-to-Lug
51mm
45.5mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
300m

Crystal & Dial

3 specs
Crystal
Mineral
Sapphire
Dial Color
COMMAND PILOT
Bahama Blue
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
Sellita SW300-1
Type
Quartz
Automatic
Power Reserve
40h
56h

Pricing

1 specs
MSRP
$315
$2,230

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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.

AVI-8 P-51 Mustang Blakeslee Meca-Quartz Chronograph

Owners widely praise the AVI-8 P-51 Mustang Blakeslee Meca-Quartz Chronograph for its vintage-inspired, cockpit instrument aesthetic and the functional meca-quartz chronograph movement. The blue dial is described as stunning with depth, and the aviation-style numerals and brushed steel case contribute to its look. One owner notes the non-sapphire crystal scratches easily, and another criticizes the highly reflective crystal and poor lume. On balance, owners rate the AVI-8 P-51 Mustang Blakeslee Meca-Quartz Chronograph highly for its collectible aviation tribute design and satisfying meca-quartz chronograph function.

Formex Reef 39.5 mm

The Formex Reef 39.5 mm is widely praised for its refined finishing, comfortable and well-proportioned case design, and impressive specifications for its price point, including COSC-certified Sellita SW300-1 movement and 300m water resistance. Owners and reviewers highlight the tool-less micro-adjust clasp and quick-release spring bars as practical features. Some reviewers note that the 22mm lug width feels slightly disproportionate to the smaller case, and the bracelet could benefit from more taper, though this is a point of contention for some owners who value the overall package. A prototype crown protrusion issue is noted as being addressed for production. On balance, owners and reviewers rate the Formex Reef 39.5 mm highly for its excellent value and well-executed design.

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