Seiko Prospex Speedtimer Auto – 39.5 mm

Reference Number
HBC003J1

TECHNICAL SPECIFICATIONS

MOVEMENT
Caliber Number: 6R55
Movement Type: Automatic with manual winding
Precision: +25 to -15 seconds per day
Power reserve: Approx. 72 hours(3 days)
Jewels: 24
Functions: Stop second hand function

CASE/BAND
Case Material: Stainless steel (super hard coating)
Case Size
– Thickness:12.0mm
– Diameter:39.5mm
– Lug-to-lug:44.5mm
Crystal: 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: 20mm

OTHER DETAILS
Water Resistance: 20 bar
Magnetic Resistance: 4,800 A/m
Features:
– Inner rotating ring with countdown scale
– Screw case back