Side by side

Borealis Watch Co. SintravsHamilton American Classic Valiant Auto

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

Sintra
Borealis Watch Co.Sintra
MSRP $650
American Classic Valiant Auto
HamiltonAmerican Classic Valiant Auto
MSRP $645

At a glance

11 of 29 specs differ
Diameter
Sintra41.50mm
American Classic Valiant Auto34mm
Power Reserve
Sintra40h
American Classic Valiant Auto80h
Water Resistance
Sintra200m
American Classic Valiant Auto50m
MSRP
Sintra$650
American Classic Valiant Auto$645

Full specifications

Case

6 specs
Category
Sport
Dress
Diameter
41.50mm
34mm
Thickness
12.95mm
10.58mm
Lug-to-Lug
47.00mm
46mm
Lug Width
20mm
16mm
Water Resistance
200m
50m

Crystal & Dial

2 specs
Dial Color
Black
Silver
Lume
BGW9
None

Movement

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

Pricing

1 specs
MSRP
$650
$645

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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 American Classic Valiant Auto

Owners widely praise the Hamilton American Classic Valiant Auto for its classic design elements, such as the sunburst dial and Roman numerals, noting its suitability for everyday elegance and wearability under a cuff. One owner highlights the 39.5mm size and applied indices as a "hidden gem," while another appreciates the clean, simple design with thin Roman numerals. The watch is also commended for its comfortable bracelet and attractive lance hands, with confirmation that the bracelet is indeed changeable. Some owners note the date window's placement at three o'clock is a point of contention, and one owner reports the watch runs at approximately +6 seconds per day after ten years of intermittent use. On balance, owners rate the Hamilton American Classic Valiant Auto highly for its elegant, classic design and comfortable wearability at its price point.

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