Seiko Prospex SNR027 LX Spring Drive GMT Black Leather

Caliber Number: 5R66

Movement Type: Spring Drive

Precision: ±15 seconds per month (±1 second per day)

Power Reserve: Approx. 72 hours(3 days)

Jewels: 30

Case Material: Titanium (super-hard coating)

Thickness: 14.7mm

Diameter: 44.8mm

Lug-to-Lug: 50.9mm

Crystal: Sapphire crystal

Crystal Coating: Super-clear coating

LumiBrite: LumiBrite on hands and index(es)

Band Material: Calfskin

Clasp: Three-fold clasp with push button release

Distance Between Lugs: 22

Other Details

Water Resistance: 20 bar

Weight: 106.0g

Features 

• Rotating compass bezel
• Screw-down crown
• Three-fold clasp with secure lock
• Screw case back

Functions 

• 24-hour hand (dual time display function)
• Power reserve indicator
• Calendar-linked time difference adjustment function
• Stop-seconds hand function
• Date display