Side by side

Borealis Watch Co. SintravsHamilton Khaki Aviation Air Race Auto

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

Sintra
Borealis Watch Co.Sintra
MSRP $650
Khaki Aviation Air Race Auto
HamiltonKhaki Aviation Air Race Auto
MSRP $845

At a glance

10 of 29 specs differ
Diameter
Sintra41.50mm
Khaki Aviation Air Race Auto38mm
Power Reserve
Sintra40h
Khaki Aviation Air Race Auto80h
Water Resistance
Sintra200m
Khaki Aviation Air Race Auto50m
MSRP
Sintra$650
Khaki Aviation Air Race Auto$845

Full specifications

Case

6 specs
Category
Sport
Pilot
Diameter
41.50mm
38mm
Thickness
12.95mm
10.8mm
Lug-to-Lug
47.00mm
46mm
Lug Width
20mm
19mm
Water Resistance
200m
50m

Crystal & Dial

1 specs
Lume
BGW9
None

Movement

2 specs
Caliber
Miyota 9015
H-10
Power Reserve
40h
80h

Pricing

1 specs
MSRP
$650
$845

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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.

Borealis Watch Co. Sintra

Borealis Watch Co. Sintra owners widely praise its well-executed design, featuring applied indices and a shimmering blue dial that some prefer over more expensive alternatives. The timepiece is noted for excellent build quality and high-end specifications for its price, including a Miyota 90S5 movement and a premium bracelet. One owner did not purchase due to its size not being 39mm or less, while the 90xx movements are considered reliable and accurate, though some find them noisy. On balance, owners rate the Borealis Watch Co. Sintra highly for its impressive design and build quality at its price point.

Hamilton Khaki Aviation Air Race Auto

Owners widely praise the Hamilton Khaki Aviation Air Race Auto for its legibility and practicality, with some appreciating its countdown bezel and GMT pointer. However, opinions on its design are split, with some calling it a "Frankenstein" and disliking the skeleton hands, while others find the hands suitable for a pilot watch. One owner notes the lume is underwhelming and the 44mm size may be too large for some wrists. The original strap is also described as uncomfortable and prone to water stains. On balance, owners value the Hamilton Khaki Aviation Air Race Auto for its legibility and practical features, despite a polarizing design and some comfort concerns.

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