Side by side

Christopher Ward C1 Moonphase 37vsTissot PRX UFO Robot Grendizer 50th Anniversary

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

C1 Moonphase 37
Christopher WardC1 Moonphase 37
MSRP $3,050
PRX UFO Robot Grendizer 50th Anniversary
TissotPRX UFO Robot Grendizer 50th Anniversary
MSRP $1,100
What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Christopher Ward C1 Moonphase 37

Owners widely praise the Christopher Ward C1 Moonphase 37 for its aventurine dial and moon display, with one user awarding it a perfect score for its celestial theme. However, the lack of hour markers and lume-less hands make time-telling difficult, and hands can disappear against the dial. The COSC-certified movement averages +2.3 seconds per day, and the bracelet clasp is noted for comfort. The moonphase complication itself is reported by one owner to be inaccurate despite manufacturer attempts to correct it, though other users view such complications as primarily decorative. The 38-hour power reserve is considered short. Overall, owners rate the Christopher Ward C1 Moonphase 37 highly for its striking aventurine dial and moon focus, despite challenges with legibility and the practical accuracy of its moonphase complication.

From video reviewers

The dial finishing—textured surface with applied indices and aventurine depth—stands as the defining aesthetic achievement, complemented by an exceptionally accurate 128-year moonphase mechanism. The 37mm case may feel undersized for wearers transitioning from larger sports watches.

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

16 of 29 specs differ
Diameter
C1 Moonphase 3744.07mm
PRX UFO Robot Grendizer 50th Anniversary40mm
Power Reserve
C1 Moonphase 3738h
PRX UFO Robot Grendizer 50th Anniversary80h
Water Resistance
C1 Moonphase 3730m
PRX UFO Robot Grendizer 50th Anniversary100m
MSRP
C1 Moonphase 37$3,050
PRX UFO Robot Grendizer 50th Anniversary$1,100

Full specifications

Case

6 specs
Diameter
44.07mm
40mm
Thickness
13.1mm
10.93mm
Lug-to-Lug
44.07mm
39.5mm
Lug Width
20mm
12mm
Finish
Brushed + Polished
Brushed and polished
Water Resistance
30m
100m

Crystal & Dial

4 specs
AR Coating
Inner
Yes
Dial Color
Blue
Black
Indices
Applied
Indexes
Lume
SLN X1 WL C1
Super-LumiNova ®

Movement

5 specs
Caliber
Sellita SW220-1
Tissot Powermatic 80
Beat Rate
4 vph
28,800 vph
Power Reserve
38h
80h
Jewels
26
25
Complications
Moonphase
None

Pricing

1 specs
MSRP
$3,050
$1,100
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