Side by side

Hamilton Khaki Aviation Pilot Pioneer Mechanical ChronovsBaltic Prismic Stone

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

Prismic Stone
BalticPrismic Stone
MSRP $1,404
What people say

Owners + reviewers, side by side

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

Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono

Owners and reviewers widely praise the Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono for its authentic military design, attractive dial execution, and intriguing asymmetrical case, with many appreciating its utilitarian feel and vintage vibe. The hand-wound H-51-Si movement, offering a 60-hour power reserve and accuracy around +5 to +7 seconds per day, is also noted positively, as is the satisfying feel of manual winding. Some owners find the 36mm case size light and versatile, while others note it wears larger than its dimensions suggest. However, several sources point to the mineral crystal as a drawback compared to sapphire, and the lume is generally described as weak. The included strap is frequently criticized for being too long and uncomfortable, with many preferring it on a NATO strap. On balance, owners and reviewers rate the Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono highly for its compelling vintage military aesthetic and solid value proposition.

From video reviewers

The vintage-inspired design referencing a 1970s RAF model is a shared strength. Reviewers did not reach a consensus on any weaknesses or specific points of disagreement.

Baltic Prismic Stone

Owners and reviewers widely praise the Baltic Prismic Stone for its striking and unique natural stone dials, with specific mentions of the bloodstone and red agate variants being highlights. The watch is noted for its refined, retro dress watch aesthetic, featuring a well-finished 36mm bi-metal case combining stainless steel and titanium, and a slim profile measuring 9.2mm or 9.5mm thick. The hand-wound movement, either an ETA Peseux 7001 or a La Joux-Perret D100, is generally seen as reliable, offering a 42-hour or 50-hour power reserve respectively. However, some owners find the collection overpriced and the small, recessed crown uncomfortable for winding. The Milanese bracelet is also a point of contention, with some finding it may not articulate well for smaller wrists. Accuracy figures vary, with one owner reporting +1/+2 seconds per day and another around -6 seconds per day.

From video reviewers

The unique natural stone dials are a standout feature of the Baltic Prismic Stone. The slim 9mm case, constructed from stainless steel and Grade 5 titanium, is also a notable aspect. However, some buyers may find the price of €1,300 to be a trade-off, considering the watch's Swiss movement and slim profile may not justify the cost compared to competitors.

At a glance

11 of 29 specs differ
Diameter
Khaki Aviation Pilot Pioneer Mechanical Chrono40mm
Prismic Stone36mm
Power Reserve
Khaki Aviation Pilot Pioneer Mechanical Chrono60h
Prismic Stone50h
Water Resistance
Khaki Aviation Pilot Pioneer Mechanical Chrono100m
Prismic Stone30m
MSRP
Khaki Aviation Pilot Pioneer Mechanical Chrono$2,445
Prismic Stone$1,404

Full specifications

Case

6 specs
Category
Pilot
Dress
Diameter
40mm
36mm
Thickness
14.35mm
9.2mm
Lug-to-Lug
50mm
44mm
Lug Width
22mm
20mm
Water Resistance
100m
30m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Blue
Bloodstone

Movement

2 specs
Caliber
H-51-Si
La Joux-Perret D100
Power Reserve
60h
50h

Pricing

1 specs
MSRP
$2,445
$1,404
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