Side by side

Venezianico Arsenale UltrablackvsTissot PRX UFO Robot Grendizer 50th Anniversary

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

Arsenale Ultrablack
VenezianicoArsenale Ultrablack
MSRP $885
PRX UFO Robot Grendizer 50th Anniversary
TissotPRX UFO Robot Grendizer 50th Anniversary
MSRP $1,100

At a glance

8 of 29 specs differ
Diameter
Arsenale Ultrablack40mm
PRX UFO Robot Grendizer 50th Anniversary40mm
Power Reserve
Arsenale Ultrablack40h
PRX UFO Robot Grendizer 50th Anniversary80h
Water Resistance
Arsenale Ultrablack100m
PRX UFO Robot Grendizer 50th Anniversary100m
MSRP
Arsenale Ultrablack$885
PRX UFO Robot Grendizer 50th Anniversary$1,100

Full specifications

Case

3 specs
Thickness
8.95mm
10.93mm
Lug-to-Lug
44mm
39.5mm
Lug Width
20mm
12mm

Crystal & Dial

2 specs
Indices
Applied
Indexes
Lume
None
Super-LumiNova ®

Movement

2 specs
Caliber
Miyota 9029
Powermatic 80
Power Reserve
40h
80h

Pricing

1 specs
MSRP
$885
$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.

Venezianico Arsenale Ultrablack

The Venezianico Arsenale is widely praised for its exceptional finishing and value, with reviewers highlighting the ridged bezel, case sides, and dynamic Côtes de Genève dial. Owners note its impressive wearability, attributed to a thin 8.95mm case, and some see design cues that evoke more expensive watches. One reviewer points out that the strap-changing mechanism is difficult and the watch lacks lume. Overall, reviewers rate the Venezianico Arsenale highly for its detailed finishing and wearability at its price point.

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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