Seiko Prospex Speedtimer Mechanical Chronograph 42 MM Automatic Watch SRQ047J1

Caliber Number: 8R48

Movement Type: Automatic with manual winding

Precision: +25 to -15 seconds per day

Power reserve: Approx. 45 hours

Jewels: 34

Chronograph with 30 minutes & 12 hours

Stop second hand function

Date display

Case Material: Stainless steel (super hard coating)

Case Size

Thickness:14.6mm

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

Weight: 183.0

Screw case back