06/06/2026
Seiko 5 Sports Speed Timer "UFO" Ref. 6138-0020
Status: AVAILABLE
The Seiko 6138-0020, affectionately known among collectors as the "UFO" due to its massive, lugless saucer shaped case, stands as one of the boldest and most recognizable automatic chronographs of the 1970s. This specific JDM (Japanese Domestic Market) Speed Timer variant features a deep matte black dial contrasted beautifully by eye catching red and orange sports accents on the sweep hands and sub dials. Beating inside is the legendary Caliber 6138 automatic movement, a true mechanical powerhouse featuring a column wheel and vertical clutch mechanism. It is a quintessential statement piece that perfectly encapsulates the high octane, unapologetic design language of vintage racing horology.
Specifications:
Brand: Seiko
Model: 5 Sports Speed Timer UFO
Reference: 6138-0020
Year: Circa 1970 to 1977
Movement: Cal. 6138 Automatic Chronograph with Column Wheel
Case Material: Stainless Steel
Dial: Matte Black with Silver Sub Dials and Red Orange Accents
Functions: Chronograph 12 hour and 30 minute counters, Day Date Display
Condition:
Dial: The original JDM Speed Timer dial is in phenomenal vintage condition, keeping its crisp text, bright accents, and sharp contrast.
Architecture: The iconic lugless saucer case is thick and heavy, beautifully retaining its massive presence and original structural profile.
Functionality: Running strong and keeping excellent time; chronograph functions crisp with pushers starting, stopping, and snapping straight back to zero.
Bracelet: Paired with its distinctive stainless steel bracelet that completes the seamless, fluid wrist presence this reference is famous for.
DM to secure this legendary JDM vintage racing icon or visit our store.
#61380020 Seiko6138 JDMWatch RacingWatch ExecutiveStyle