Description
Seiko Prospex introduces a fully-fledged mechanical model designed for the harsh environments of motorsports.
Product Number: SBDC217
Series Name: SPEEDTIMER
Caliber No.: 6R55
Movement Type: Mechanical Automatic (with manual winding)
Accuracy: +25 to -15 seconds per day
Power Run: Approximately 72 hours when fully wound
Jewel Count: 24
Functions: Stop-seconds function, Calendar (Date) function
Case Material: Stainless Steel
Case Coating: DiaShield
Case Size (H x W x H): 12.0mm x 39.5mm x 44.5mm
Crystal Material: Curved Sapphire
Crystal Coating: Anti-reflective coating on the inner surface
Lumibrite: Yes (hands, indexes, dial ring)
Clasp: One-push three-fold clasp
Wrist circumference (maximum): 197.0mm
Band width: 20mm
Water resistance: Enhanced water resistance for everyday use (20 bar)
Magnetic resistance: Yes
Weight: 154.0g
Other features: Countdown scale inner ring, screw back
Country of origin: Japan
Release date: September 5, 2025
Warranty: 3-year manufacturer's warranty
Other services: Free gift wrapping, write a review and receive a free watch cloth
*Prices and points may differ between online and physical stores.










