Seiko Prospex Speedtimer X Datsun 240Z Collaboration Limited Edition Solar Tachymeter Chronograph Japan Exclusive Model
SBDL121
(Int. Version Model: SSC957)
Limited Edition of 4,000 Pieces
(Japanese Market Limited Edition of 1,200 Pieces )
Born from Speed. Driven by Heritage.
In the early 1970s, the Datsun 240Z carved its legend on the rally stage, a crimson streak that defied the odds and carried the SEIKO name across 6,200 km of unforgiving terrain. That spirit of endurance and precision lives on in the Seiko Prospex Speedtimer X Datsun 240Z SBDL121 (SSC957) — a collaboration that fuses motorsport grit with horological mastery.
At its heart beats Seiko’s solar chronograph Caliber V192, delivering accuracy within ±15 seconds per month and a power reserve of up to 6 months on a full charge. The 41.4 mm stainless steel case and curved sapphire crystal frame a bold black dial, accented by a striking red 60‑minute chapter ring with rally‑inspired markings. A tachymeter bezel completes the dashboard‑like aesthetic, echoing the adrenaline of classic rally machines.
This model is a worldwide limited edition of 4,000 pieces, with only 1,200 reserved for Japan — making it both globally scarce and locally treasured. Each case back is engraved with its unique serial number, a mark of authenticity for collectors who understand that true rarity is forged in limited supply.
With its rally‑inspired design, black dial, and unmistakable red accents, the SBDL121 (SSC957) is more than a timepiece. It is a tribute to two pioneers — Seiko and Datsun — who dared to take on the world and proved that precision and passion can conquer any road.
SBDL121 Specification:
Movement
Solar Power
Caliber: V192
Accuracy: ±15 seconds per month
Driving period: About 6 months when fully charged
Features
Overcharge Prevention
24-Hour Hand
Small Second Hand
Stopwatch (1/5-Second, 60-Minute Counter)
Power Reserve Indicator
Calendar (Date)
Exterior
Case Material: Stainless Steel
Case Size: Thickness: 13.0mm, Width: 41.4mm, Height: 45.9mm
Crystal Material: Curved Sapphire
Crystal Coating: Anti-reflective coating on inner surface
Lumibrite: Yes (Hands and Indexes)
Clasp: One-push three-fold clasp
Maximum Wrist Circumference: 195.0mm
Lug to lug: 21mm
Other Details
Water Resistance: Enhanced water resistance for everyday use (10 bar)
Magnetic Resistance: Yes 4,800 A/m
Weight: 164.0g
"LIMITED EDITION" inscription on case back
Serial number engraved on case back
Tachymeter included
Screw case back
* Kindly note that the displayed image is either a graphic representation or a prototype and may not reflect the final product precisely. Color variations may occur due to differences in browsers, display settings, or devices used for viewing. Additionally, the orientation of the case back in the actual product may differ from what is shown in the photograph.
