If you grew up in the 70s or been a fan of the Japan's showa era, you’re likely familiar with the iconic Japanese pop culture figures that have left a lasting global impact, particularly through the enduring appeal of "Tokusatsu" superhero series from the late 1960s and 70s.
One of the most popular Tokusatsu shows was Kamen Rider, which is a sci-fi series that featured Takeshi Hongo as a motorcycle rider, and back in 2014, collectors identified that he was wearing a Seiko 5 Sports Ref.5126-8090 thus giving it the "Kamen Rider" nickname.
And if you’re curious about the name choice, it couldn’t be more fitting: Designed for motorcycle enthusiasts, this classic features a black dial with contrast white hour markers and hands, a day/date window at the 3 o’clock position, and a bright red “lollipop” sweep counts the seconds. Beyond the dial is a steel chapter with a tightly grooved concentric pattern that creates an almost iridescent frame. The bezel, finished in a sandblasted texture, features minimal black markers at the hours and a luminous pip at zero for added visibility. Adding to its unique character, the rally bracelet stands out with 10mm center links that seamlessly integrate into the end pieces, reinforcing the watch’s rugged and dynamic aesthetic.
The Kamen Rider also came in a rare silver dial variant, both exclusive to the Japanese domestic market and produced in a limited run. Even if you're not a die-hard Kamen Rider fan, the appeal of this diver is undeniable. We're thrilled to offer this exceptional unused example for enthusiasts and collectors alike.
The watch currently works flawlessly and will be sold as-is. Please let us know if you wish to service it.
Ships from Tokyo, Japan.
Seiko 5 Sports 5126-8090 Kamen Rider
This watch is in outstanding condition, showcasing its untouched, factory-original lines with no visible scratches—only light marks from storage.
The dial remains immaculate, free from any signs of deterioration. The original lume is vibrant and intact, with no indications of decay.
The bracelet is complete in its full size, still bearing the original sticker. The caseback shows minor storage scratches but retains traces of the original blue sticker.
This example comes with its original price tag, swing tag, and instruction manual.
BRAND: Seiko
MODEL: 5 Sports diver
REFERENCE: 5126-8090 "Kamen Rider"
DIAL: Original black dial
CASE MATERIAL: Stainless Steel
CASE DIMENSIONS: 38 x 41 mm diameter, 13mm Height, 19mm Lug Width
CRYSTAL: Mineral glass
CASE BACK: Screw-in Stainless Steel
MOVEMENT: Cal.5126A (Self-Winding)
Manufacturing date: March 1968
Service History: Unknown, ±10s/day
Bracelet/Strap: Original and correct Seiko 5 Sports bracelet coded 5126 810