SEIKO PROSPEX 1959 ALPINIST RE-INTERPRETATION SPB241J1

The Seiko Prospex 1959 Alpinist Re-interpretation (SPB241J1) is a modern take on Seiko's first sports watch, originally designed for Japanese mountain climbers. It features a stainless steel case, an automatic movement, and a beige dial with LumiBrite-coated hands and indexes. 

Technical specifications

Movement

• Caliber: 6R35 automatic movement with manual winding capability.
• Power reserve: Approximately 70 hours.
• Jewels: 24.
• Accuracy: +25 to -15 seconds per day.
• Functions: Date display and a stop-seconds hand function. 

• Case material: Stainless steel.
• Case size: 38mm diameter, 12.9mm thickness, and 46.2mm lug-to-lug.
• Crystal: Curved sapphire crystal with an anti-reflective coating on the inner surface.
• Case back: See-through screw-down case back.
• Crown: Screw-down crown. 

• Water resistance: 20 bar (200 meters/660 feet).
• LumiBrite: Hands and indexes are coated with LumiBrite for visibility in low light conditions.
• Band: Stainless steel bracelet with a three-fold clasp and push-button release.
• Distance between lugs: 19mm.
• Dial color: Cream/beige.
• Weight: 146.0g.