Seiko Prospex Speedtimer Mechanical SPB515J1

Seiko Prospex Speedtimer Mechanical – Mechanics meet Motorsport

A classic from the 70s reinterpreted

The Seiko Prospex Speedtimer Mechanical combines the sporty heritage of the 1970s with modern watchmaking craftsmanship. Inspired by the iconic chronographs of that era, this model brings the distinctive design and functionality of the past into the present – packed into a compact, robust mechanical watch with a countdown function.

Countdown function on the inner ring

The crown at 4 o’clock operates the inner rotating ring, which enables a countdown display – practical for motorsport, training sessions, or everyday time measurements. The orange accents on the ring and the seconds hand ensure optimal readability even at a quick glance.

Classic design with technical sophistication

The dial, with its mechanical charm, evokes the rhythm of an engine. The domed sapphire crystal lens with internal anti-reflective coating provides clear visibility from every angle. The stainless steel case with super-hard coating and the comfortable multi-link bracelet offer durability and wearing comfort at the highest level.

Technical highlights

• Movement: Automatic (Caliber 6R55) with manual winding
• Power reserve: approx. 72 hours
• Accuracy: +25 to -15 seconds per day
• Functions: Hours, minutes, seconds, date display, hacking seconds, countdown function
• Case: Stainless steel with super-hard coating
• Diameter: 39.5 mm
• Height: 12.0 mm
• Lug-to-lug: 44.5 mm
• Lug width: 20 mm
• Glass: Domed sapphire crystal, internally anti-reflective
• Water resistance: 20 bar (200 meters)
• Magnetic resistance: up to 4,800 A/m
• Weight: 154 g
• Clasp: Safety folding clasp with push button

Stylish, precise, and ready for action

The Seiko Prospex Speedtimer Mechanical combines retro charm with cutting-edge technology. Its vintage-inspired design, paired with reliable mechanics and sporty functionality, makes it the perfect choice for anyone who values speed, style, and precision.