Side by side

Tissot PRX UFO Robot Grendizer 50th AnniversaryvsWilliam Wood Fearless

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
Fearless
William WoodFearless
MSRP $920

At a glance

12 of 29 specs differ
Diameter
PRX UFO Robot Grendizer 50th Anniversary40mm
Fearless39mm
Power Reserve
PRX UFO Robot Grendizer 50th Anniversary80h
Fearless40h
Water Resistance
PRX UFO Robot Grendizer 50th Anniversary100m
Fearless100m
MSRP
PRX UFO Robot Grendizer 50th Anniversary$1,100
Fearless$920

Full specifications

Case

5 specs
Category
Dress
Diver
Diameter
40mm
39mm
Thickness
10.93mm
14mm
Lug-to-Lug
39.5mm
39mm
Lug Width
12mm
20mm

Crystal & Dial

4 specs
AR Coating
Yes
Inner
Dial Color
Black
Yellow
Indices
Indexes
Applied
Lume
Super-LumiNova ®
None

Movement

2 specs
Caliber
Powermatic 80
Seiko NH35
Power Reserve
80h
40h

Pricing

1 specs
MSRP
$1,100
$920

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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.

William Wood Fearless

The William Wood Fearless is noted for its wearable 39mm case size and comfortable 45mm lug-to-lug, with a matte black ion-plated finish and colorful rehaut accents. Reviewers highlight its recycled fire hose strap and 100m water resistance, stemming from its firefighter heritage. The Seiko NH35 movement is considered accurate for its price point. On balance, reviewers find the William Wood Fearless to be a well-finished field watch with unique heritage elements.

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