Side by side

Hamilton Ventura XXL Skeleton AutovsTissot PRX UFO Robot Grendizer 50th Anniversary

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

Ventura XXL Skeleton Auto
HamiltonVentura XXL Skeleton Auto
MSRP $2,175
PRX UFO Robot Grendizer 50th Anniversary
TissotPRX UFO Robot Grendizer 50th Anniversary
MSRP $1,100

At a glance

11 of 29 specs differ
Diameter
Ventura XXL Skeleton Auto46mm
PRX UFO Robot Grendizer 50th Anniversary40mm
Power Reserve
Ventura XXL Skeleton Auto80h
PRX UFO Robot Grendizer 50th Anniversary80h
Water Resistance
Ventura XXL Skeleton Auto50m
PRX UFO Robot Grendizer 50th Anniversary100m
MSRP
Ventura XXL Skeleton Auto$2,175
PRX UFO Robot Grendizer 50th Anniversary$1,100

Full specifications

Case

6 specs
Category
Skeleton
Dress
Diameter
46mm
40mm
Thickness
11.25mm
10.93mm
Lug-to-Lug
46mm
39.5mm
Lug Width
23mm
12mm
Water Resistance
50m
100m

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Indices
Applied
Indexes
Lume
None
Super-LumiNova ®

Movement

1 specs
Caliber
H-10-S
Powermatic 80

Pricing

1 specs
MSRP
$2,175
$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 Ventura XXL Skeleton Auto

The Hamilton Ventura XXL Skeleton Auto is recognized for its bold, avant-garde design featuring a unique triangular case. It is powered by a skeletonized H-10-S or ETA C07.901 movement, providing an 80-hour power reserve. The watch includes a black dial with sunray brushing and hands treated with Super-LumiNova, and comes on an integrated rubber strap. Reviewers note that while its distinctive aesthetic is a significant appeal, precise time-reading may not be its main focus. On balance, the Hamilton Ventura XXL Skeleton Auto is appreciated for its striking, statement-making design and substantial power reserve.

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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