Seiko Prospex Speedtimer 42 MM SS Automatic Black Dial Watch SRQ053J1

Movement

Caliber Number: 8R48

Movement Type: Automatic with manual winding

Precision: +25 to -15 seconds per day

Power reserve: Approx. 45 hours

Jewels: 34

Functions

Chronograph with 30 minutes & 12 hours

Stop second hand function

Date display

Case/Band

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

Other Details

Water Resistance: 10 bar

Magnetic Resistance: 4,800 A/m

Features: Screw case back