Tissot PRX UFO Robot Grendizer 50th AnniversaryvsZelos GT
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

PRX UFO Robot Grendizer 50th Anniversary

GT
Diameter
40mm
42mm
Lug-to-Lug
39.5mm
n/a
Thickness
10.9mm
10.8mm
lowest
Water Resistance
100m
100m
Power Reserve
80h
n/a
MSRP
$1,100
$529
lowest
Movement
Tissot Powermatic 80
Miyota 9133
Case
6 specsCrystal & Dial
4 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
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. Owners note it is the first 40mm PRX to omit the date window, and its packaging and watch box are described as exceptional. 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 watch retains the familiar 40mm case, Powermatic 80 movement, and integrated bracelet, retailing for CHF 795 / US$825. On balance, owners and reviewers rate the Tissot PRX UFO Robot Grendizer 50th Anniversary highly for its unique thematic execution and desirable packaging, despite some polarizing dial aesthetics.
The Zelos GT is lauded for its value and bold design, with owners highlighting the cool power reserve meter and superb 3-point micro-adjust bracelet. Some owners find the case and lugs could hug the wrist better, and the bracelet is noted as being quite long, requiring significant link removal for a 7.1-inch wrist. The dark green dial, while inspired by Lamborghini, is described as appearing mostly black. Overall, owners rate the Zelos GT highly for its value and the quality of its bracelet at the price point.
The dial's subtle light play and the inclusion of a Miyota 9133 movement with a power reserve indicator are noted strengths. Reviewers did not reach a consensus on any weaknesses.
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