Seiko Prospex SPEEDTIMER HBC004J1

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)
• Band Material: Cow leather
• Clasp: Three-fold clasp with push button release
• Distance between lugs: 20

Other Details

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