Side by side

Hamilton American Classic Spirit of Liberty AutovsTissot PRX UFO Robot Grendizer 50th Anniversary

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

PRX UFO Robot Grendizer 50th Anniversary
TissotPRX UFO Robot Grendizer 50th Anniversary
MSRP $1,100

At a glance

11 of 29 specs differ
Diameter
American Classic Spirit of Liberty Auto42mm
PRX UFO Robot Grendizer 50th Anniversary40mm
Power Reserve
American Classic Spirit of Liberty Auto80h
PRX UFO Robot Grendizer 50th Anniversary80h
Water Resistance
American Classic Spirit of Liberty Auto50m
PRX UFO Robot Grendizer 50th Anniversary100m
MSRP
American Classic Spirit of Liberty Auto$1,195
PRX UFO Robot Grendizer 50th Anniversary$1,100

Full specifications

Case

5 specs
Diameter
42mm
40mm
Thickness
11.4mm
10.93mm
Lug-to-Lug
46mm
39.5mm
Lug Width
22mm
12mm
Water Resistance
50m
100m

Crystal & Dial

4 specs
AR Coating
Inner
Yes
Dial Color
Blue
Black
Indices
Applied
Indexes
Lume
None
Super-LumiNova ®

Movement

1 specs
Caliber
H-10
Powermatic 80

Pricing

1 specs
MSRP
$1,195
$1,100

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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.

Hamilton American Classic Spirit of Liberty Auto

Owners widely praise the Hamilton American Classic Spirit of Liberty Auto for its classical design, quality finishing, and refined presence, with its silver sunburst dial and rose gold accents frequently highlighted as beautiful. The H-10 movement offers an 80-hour power reserve, and some find the 42mm case size and 12mm thickness ideal for wearability. However, legibility can be an issue due to thin hands on the reflective dial, and the laser-engraved quote on the strap is a common point of contention, with some finding it detracts from the strap's appearance. Concerns are also raised about its limited versatility for everyday wear due to its dressier style, low water resistance, and lack of crown guards. Overall, owners and reviewers rate the Hamilton American Classic Spirit of Liberty Auto highly for its attractive design and value for money, particularly its movement and finishing.

Tissot PRX UFO Robot Grendizer 50th Anniversary

The Tissot PRX UFO Robot Grendizer 50th Anniversary is praised for its tasteful integration of anime elements onto the PRX design, featuring an engraved Grendizer bust on a sunburst blue dial with Super-Luminova, and is the first 40mm PRX to omit the date. Owners widely report huge demand, with all 1975 units selling out quickly. The packaging and watch box are described as "dope" and "insane," with one commenter stating the packing alone is "worth the buy." The watch retains the familiar 40mm case, Powermatic 80 movement with 80-hour power reserve, and integrated bracelet. Some find the Grendizer dial less appealing than the standard waffle dial, with one owner calling it "childish," while another considers it "the best PRX." The Grendizer graphic is less prominent in person than in photos, and the watch has a ghost date position. The Tissot PRX UFO Robot Grendizer 50th Anniversary retails for US$825 / CHF 795.

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