Side by side

Hamilton American Classic PSR Digital QuartzvsTissot PRX UFO Robot Grendizer 50th Anniversary

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

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 PSR Digital Quartz

Owners widely praise the Hamilton American Classic PSR Digital Quartz for its cool retro-futuristic design and historical reissue status, with many finding it comfortable for all-day wear on its tapering bracelet. Reviewers and owners consistently highlight its exceptional accuracy, with figures ranging from +/- zero seconds per day to -0.5 to +0.7 seconds per day. The watch features a hybrid dual display with LCD and OLED technology, a sapphire crystal, and 100m water resistance, with battery life estimated at three to five years. Some owners note sharp edges on the clasp buttons and a lack of micro-adjustments on the butterfly clasp, while others find the red LCD dim outdoors and the display activation delayed, requiring a button press to see the time in the dark. The price is considered accessible by some for its unique character and heritage, though others find it expensive for a quartz digital watch.

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.

At a glance

11 of 29 specs differ
Diameter
American Classic PSR Digital Quartz41mm
PRX UFO Robot Grendizer 50th Anniversary40mm
Power Reserve
American Classic PSR Digital Quartz
PRX UFO Robot Grendizer 50th Anniversary80h
Water Resistance
American Classic PSR Digital Quartz100m
PRX UFO Robot Grendizer 50th Anniversary100m
MSRP
American Classic PSR Digital Quartz$1,225
PRX UFO Robot Grendizer 50th Anniversary$1,100

Full specifications

Case

4 specs
Diameter
41mm
40mm
Thickness
13.3mm
10.93mm
Lug-to-Lug
46mm
39.5mm
Lug Width
24mm
12mm

Crystal & Dial

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

Movement

3 specs
Caliber
H-10e
Tissot Powermatic 80
Type
Quartz
Automatic
Power Reserve
0h
80h

Pricing

1 specs
MSRP
$1,225
$1,100
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