Side by side

Seiko King Seiko VANACvsTissot PRX UFO Robot Grendizer 50th Anniversary

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

King Seiko VANAC
SeikoKing Seiko VANAC
MSRP $3,850
PRX UFO Robot Grendizer 50th Anniversary
TissotPRX UFO Robot Grendizer 50th Anniversary
MSRP $1,100

At a glance

12 of 29 specs differ
Diameter
King Seiko VANAC41mm
PRX UFO Robot Grendizer 50th Anniversary40mm
Power Reserve
King Seiko VANAC72h
PRX UFO Robot Grendizer 50th Anniversary80h
Water Resistance
King Seiko VANAC100m
PRX UFO Robot Grendizer 50th Anniversary100m
MSRP
King Seiko VANAC$3,850
PRX UFO Robot Grendizer 50th Anniversary$1,100

Full specifications

Case

4 specs
Diameter
41mm
40mm
Thickness
14.3mm
10.93mm
Lug-to-Lug
45.1mm
39.5mm
Lug Width
17mm
12mm

Crystal & Dial

4 specs
Crystal Shape
Box
Flat
AR Coating
Anti-reflective coating on inner surface
Yes
Indices
Applied
Indexes
Lume
LumiBrite on hands and index(es)
Super-LumiNova ®

Movement

3 specs
Caliber
8L45
Powermatic 80
Power Reserve
72h
80h
Jewels
35
25

Pricing

1 specs
MSRP
$3,850
$1,100

Follow this matchup

Get a note when Seiko King Seiko VANAC vs Tissot PRX UFO Robot Grendizer 50th Anniversary gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

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

Seiko King Seiko VANAC

Owners widely praise the King Seiko VANAC's sharp case lines, intricate finishing, and unique 1970s aesthetic, with many highlighting the striking dial colors and premium feel. Reviewers note the 41mm titanium case, box sapphire crystal, 100m water resistance, and the 72-hour power reserve of the 8L45 movement, rated to -5/+10 seconds per day. Some owners find the bracelet design could be improved with a narrower taper, and the watch's thickness is a concern for some, particularly given its price point. The consensus is that the King Seiko VANAC offers a distinctive vintage-inspired design and quality finishing, making it a compelling, albeit polarizing, choice.

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.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.