Seiko Prospex SRQ055 Speedtimer Automatic Chronograph Black Dial // Pre-Owned

The Seiko Prospex SRQ055 Speedtimer represents professional-grade chronograph engineering in a pre-owned timepiece. Powered by the reliable 8R48 automatic caliber with 45-hour power reserve, this watch delivers precision timing for serious collectors and enthusiasts. The 42mm stainless steel case features a super hard coating for durability, paired with a dual-curved sapphire crystal and anti-reflective coating for optimal visibility. The black dial showcases luminous hands and indexes, while the tachymeter scale enables speed calculations. A robust 10 bar water resistance rating suits daily wear and water activities. Chronograph functionality includes 30-minute and 12-hour subdials, stop second hand, and date display—essential tools for timing and tracking. The three-fold clasp with push button release ensures secure wear, and the screw case back provides additional protection. This excellent condition example arrives with original box and papers, making it an ideal addition to any serious watch collection. The 8R48 movement's 34 jewels and +25/-15 second per day precision reflect Seiko's commitment to reliable timekeeping.

Movement: Automatic 

Caliber: 8R48

Power Reserve: Approx. 45 hours

Precision: +25 to -15 seconds per day

Jewels: 34

Case Material: Stainless steel (super hard coating)

Case Diameter: 42.0mm

Case Height: 14.6mm

Case Length: 49.5mm

Crystal: Dual-curved sapphire crystal

Crystal Coating: Anti-reflective coating on inner surface

LumiBrite: Lumibrite on hands and indexes

Clasp: Three-fold clasp with push button release

Bracelet Length: 197.0mm

Lug Width: 20mm

Water Resistance: 10 bar

Weight: 191.0g

Case Back: Screw case back

Tachymeter: Yes

Box / Papers: Yes

Condition: Excellent

Functions:

• Chronograph with 30 minutes & 12 hours
• Stop second hand function
• Date display