Side by side

Tissot PRX UFO Robot Grendizer 50th AnniversaryvsTissot Heritage 1938

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
Heritage 1938
TissotHeritage 1938
MSRP $925

At a glance

12 of 29 specs differ
Diameter
PRX UFO Robot Grendizer 50th Anniversary40mm
Heritage 193839mm
Power Reserve
PRX UFO Robot Grendizer 50th Anniversary80h
Heritage 193838h
Water Resistance
PRX UFO Robot Grendizer 50th Anniversary100m
Heritage 193850m
MSRP
PRX UFO Robot Grendizer 50th Anniversary$1,100
Heritage 1938$925

Full specifications

Case

5 specs
Diameter
40mm
39mm
Thickness
10.93mm
11.1mm
Lug-to-Lug
39.5mm
39mm
Lug Width
12mm
20mm
Water Resistance
100m
50m

Crystal & Dial

4 specs
Crystal Shape
Flat
Domed
Dial Color
Black
Anthracite
Indices
Indexes
Arabic
Lume
Super-LumiNova ®
None

Movement

2 specs
Caliber
Powermatic 80
Power Reserve
80h
38h

Pricing

1 specs
MSRP
$1,100
$925

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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.

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.

Tissot Heritage 1938

Owners and reviewers widely praise the Tissot Heritage 1938 for its stunning vintage-inspired design and excellent value, particularly as a COSC-certified automatic under $1000. The dial's ability to catch light and subtly change colors, along with rosy gold numerals, is a frequent highlight. The watch uses a chronometer-certified ETA 2824-2 movement, though its 38-hour power reserve is noted as less than some contemporary offerings. Some owners find the 39mm case size appears larger on the wrist, with a desire for smaller options. Overall, owners rate the Tissot Heritage 1938 highly for its charming retro aesthetics and impressive chronometer movement at an accessible price point.

From video reviewers

The most attainable Swiss chronometer is a key strength. Reviewers did not agree on any weaknesses.

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