Seiko Prospex SRQ051 Speedtimer Chronograph Blue Dial

Caliber Number: 8R48

Movement Type: Automatic with manual winding

Precision: +25 to -15 seconds per day

Power Reserve: Approx. 45 hours

Jewels: 34

Case Material: Stainless steel (super hard coating)

Case Thickness: 14.6mm

Case Diameter: 42.0mm

Lug-to-Lug: 49.5mm

Crystal: Dual-curved sapphire crystal

Crystal Coating: Anti-reflective coating on inner surface

LumiBrite: LumiBrite on hands and index(es)

Clasp: Three-fold clasp with push button release

Distance Between Lugs: 20

Water Resistance: 10 bar

Magnetic Resistance: 4,800 A/m

Weight: 183.0g

Case Back: Screw case back

Functions:

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