Seiko Men's Prospex Land SPB505J1 

Watch Specifications

Movement

- Caliber: 6R55
- Movement Type: Automatic with manual winding
- Daily Accuracy: +25 / -15 seconds per day
- Power Reserve: Approximately 72 hours (3 days)
- Jewels: 24
- Functions: Stop second hand function

Case & Band

- Case Material: Stainless steel with super hard coating
- Case Thickness: 12.7 mm
- Case Diameter: 39.5 mm
- Lug-to-Lug Length: 46.4 mm
- Crystal: Sapphire crystal with date magnifier
- Crystal Treatment: Inner anti-reflective coating
- Luminous Performance: LumiBrite coating on hands and hour indices
- Clasp Type: Three-fold clasp with push button release
- Lug Width: 20 mm

Technical Features

- Water Resistance: 20 bar
- Magnetic Resistance: 4,800 A/m
- Net Weight: 147.0 g
- Key Features: Rotating compass bezel, screw-down crown, transparent screw case back