Side by side

Tissot PRX UFO Robot Grendizer 50th AnniversaryvsYema Wristmaster Slim Small Seconds CMM.29

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
Wristmaster Slim Small Seconds CMM.29
YemaWristmaster Slim Small Seconds CMM.29
MSRP $2,249

At a glance

10 of 29 specs differ
Diameter
PRX UFO Robot Grendizer 50th Anniversary40mm
Wristmaster Slim Small Seconds CMM.2939mm
Power Reserve
PRX UFO Robot Grendizer 50th Anniversary80h
Wristmaster Slim Small Seconds CMM.2940h
Water Resistance
PRX UFO Robot Grendizer 50th Anniversary100m
Wristmaster Slim Small Seconds CMM.29100m
MSRP
PRX UFO Robot Grendizer 50th Anniversary$1,100
Wristmaster Slim Small Seconds CMM.29$2,249

Full specifications

Case

4 specs
Diameter
40mm
39mm
Thickness
10.93mm
9mm
Lug-to-Lug
39.5mm
Lug Width
12mm
20mm

Crystal & Dial

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

Movement

2 specs
Caliber
Powermatic 80
Yema CMM.29
Power Reserve
80h
40h

Pricing

1 specs
MSRP
$1,100
$2,249

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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.

Yema Wristmaster Slim Small Seconds CMM.29

Owners widely praise the Yema Wristmaster Slim Small Seconds CMM.29 for its slim 9.5mm case, unique nature-inspired dial, and brushed steel finish. The micro-rotor movement is noted for its 4Hz beat rate and 42-hour power reserve, regulated to -/+ 10 seconds per day. Some owners report concerns regarding the movement and warranty process, while a reviewer questioned the value proposition at its price point and noted minor finishing inconsistencies on a prototype. On balance, the Yema Wristmaster Slim Small Seconds CMM.29 is highly regarded by owners for its distinctive design and comfortable wearability.

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