The SEIKO SSA447J1 is a 40.8mm stainless steel watch from the Presage Style 60's collection. Its key specifications include a Caliber 4R57 automatic movement with a 41-hour power reserve, a champagne dial, a box-shaped Hardlex crystal, and 5-bar water resistance. It features a power reserve indicator and a sub-dial for the date. 
Movement and functions

• Movement: Caliber 4R57, automatic with manual winding capability
• Jewels: 29
• Power Reserve: 41 hours
• Functions: Power reserve indicator, date display at 6 o'clock, hacking (second hand stop) 

Case and exterior

• Case Material: Stainless steel
• Case Diameter: 40.8mm
• Case Thickness: 14.3mm
• Lug-to-lug: 48.9mm
• Dial Color: Champagne or Ivory
• Crystal: Box-shaped Hardlex
• Water Resistance: 5 bar (50 meters)
• Back: See-through and screw case back 

Band and clasp

• Band Material: Stainless steel
• Clasp: Three-fold clasp with push button release
• Lug Width: 20mm 

Other details

• Weight: 148g
• LumiBrite: Lumibrite on hands and index(es)
• Other features: Vintage 1960s-inspired design