Seiko SBDP021 “Takuya Yura” Bullhead LE

Model: Seiko SBDP021 “Takuya Yura” Bullhead LE of 500

Overview: A highly unusual JDM limited edition Bullhead chronograph designed by Japanese race car designer Takuya Yura (由良拓也), the SBDP021 is a titanium-cased Seiko chronograph with HIC Beta coating and a motorsport-driven ergonomic concept. Its defining feature is its bullhead configuration, engineered for lap timing usability with minimal hand movement.

History: Released in 2004 as a limited edition collaboration, this model reflects Takuya Yura’s background in race car design and his focus on functional ergonomics in motorsport environments. The concept was built around improving usability for drivers during timing sessions, leading to the unconventional “eject-to-upright” positioning system that allows the watch to be oriented for quick lap timing without wrist repositioning.

Specifications and Condition:

Overall: Excellent Condition
Case: HIC Beta coated titanium case / Excellent Condition
Crystal: CleanDial: Bullhead chronograph layout with high-contrast timing display
Movement: Serviced
Bracelet/Strap: Original bracelet
Includes: Fullset

Movement:

7T62 quartz chronograph movement
High-accuracy quartz regulation
Chronograph function optimized for lap timing
Independent pushers positioned for ergonomic access
Designed for repeated start/stop timing operations
Low-maintenance, durable motorsport-oriented architecture

Dimensions: Approx. 42–44mm diameter
Integrated lug structure (non-standard geometry due to design)
~12–13mm thickness

Design Details: Bullhead chronograph layout for driver-oriented usability
HIC Beta coated titanium lightweight case construction
Ejectable upright positioning concept for lap timing visibility
Motorsport-inspired ergonomic design by Takuya Yura
High-legibility dial with functional timing emphasis
Distinct early-2000s Japanese experimental sports watch design language

Closing Note: The SBDP021 Takuya Yura Bullhead Chronograph is one of Seiko’s most concept-driven limited editions, merging motorsport design thinking with unconventional watch ergonomics. Its titanium construction, bullhead layout, and unique upright timing concept make it a standout piece within Seiko’s experimental sports watch lineage.