The Seiko SSK003K1 is an automatic GMT watch with a blue dial and a "Batman" (blue and black) rotating bezel. The SSK003K1 is a robust and practical watch designed for daily wear and international travel, drawing design inspiration from the classic Seiko SKX series. 

Movement

• Caliber Number: 4R34
• Type: Automatic with manual winding capability
• Power Reserve: Approximately 41 hours
• Jewels: 24
• Functions: GMT 24-hour hand (dual time display), stop seconds hand function, and date display 

Case and Dimensions

• Case Material: Stainless steel
• Case Diameter: 42.5 mm
• Case Thickness: 13.6 mm
• Lug-to-lug Length: 46.0 mm
• Lug Width: 22 mm
• Case Back: See-through and screw-down 

Crystal and Dial

• Crystal Type: Hardlex mineral crystal with a magnified date lens (cyclops)
• Dial Color: Blue with a sunray finish
• Luminescence: LumiBrite on hands and indexes 

Band and Other Features

• Band Material: Stainless steel five-link "jubilee-style" bracelet with a three-fold clasp and secure lock
• Water Resistance: 10 bar (100 meters / 330 feet)
• Bezel: Uni-directional rotating bi-color (blue and black) 24-hour bezel with a Hardlex insert