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The Astron was unveiled in Tokyo on December 25, 1969, after ten years of research and development at Suwa Seikosha (currently named Seiko Epson), a manufacturing company of Seiko Group. Within one week 100 gold watches had been sold, at a retail price of 450,000 yen ( US$1,250 (equivalent to $10,386 in 2023)) each (at the time, equivalent to ...
With the repositioning of Grand Seiko from a Seiko subbrand to an independent brand in 2017, Grand Seiko aimed to transition to a true luxury brand. In 2022, 'Kodo Constant-Force Tourbillon SLGT 003', featuring the world's first combination tourbillon and constant-force mechanism on the same axis, was released, priced at 370,000 euros.
Chūnfēn, Shunbun, Chunbun, or Xuân phân is the 4th solar term. It begins when the Sun reaches the celestial longitude of 0° and ends when it reaches the longitude of 15°. In the Gregorian calendar, it usually begins around 20 March and ends around 4 April (5 April East Asia time). It more often refers in particular to the day when the Sun ...
Higan (彼岸) is the seven middle days of spring and autumn, with Shunbun at the middle of the seven days for spring, Shūbun for fall. Shanichi (社日) is the Tsuchinoe (戊) day closest to Shunbun (middle of spring) or Shūbun (middle of fall), which can be as much as 5 days before to 4 days after Shunbun/Shūbun.
The Spring Drive uses a conventional mainspring [3] and barrel [4] along with automatic and/or stem winding to store energy, just as in a mechanical watch. [3] However, the escapement and balance wheel in mechanical watches is replaced by Seiko's Tri-synchro Regulator system, a phase-locked loop wherein a rotor, which Seiko refers to as a "glide wheel", is powered by the mainspring barrel via ...
The Seiko Golden Grand Prix, formerly known as the Golden Grand Prix Kawasaki, is a track and field competition at the International Stadium Yokohama, Japan as part of the World Athletics Continental Tour. It was first organized in 2011 at the Todoroki Athletics Stadium in Kawasaki and sponsored by Seiko.