Seiko Prospex SRQ053 Speedtimer Chronograph Black Dial Automatic EPURATO screw-in crown

screw-in crown

Training status automatically evaluates your recent exercise history and performance indicators to let you know if you’re overtraining

Buckle Width : 18mm

The H-21-Si is an automatic chronograph movement featuring a state-of-the-art balance spring made from the anti-magnetic material silicon for enhanced resistance to extreme atmospheric conditions

Weight: 125g

Seiko Prospex SRQ053 Speedtimer Chronograph Black Dial Automatic EPURATO screw-in crownCaliber 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