Seiko

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UFO

The Seiko 6119-6400 "UFO"  (produced in the 1970s) is a vintage 5 Sports 70m automatic diver characterized by its 43mm cushion-shaped case, inner rotating bezel, and 6119 automatic movement. It features a 21-jewel movement, bilingual day/date complication, and typically has a lug width of 19mm. 

• Case Size: 43mm diameter, cushion style, often referred to as "UFO" due to its shape.

• Movement: Seiko Caliber 6119 automatic (21 jewels).

• Functions: Hours, minutes, seconds, date, day (often English/Arabic or English/Roman), and inner rotating bezel.

• Case Material: Stainless Steel.

• Lug Width: 19mm.

• Thickness: Approximately 13.5mm.

• Water Resistance: 70 meters (7 ATM) - Note: Vintage water resistance is not guaranteed without professional service.

• Crystal: Hardlex (usually polished, sometimes replaced).

• Dial Colors: Common in black, orange, and brown, often with matte texture and luminous markers. 

Distinctive Features:

• The "UFO" Case: Wide bezel over a tapered case body, giving it a flying saucer appearance.

• Inner Bezel: A rotating bezel inside the crystal, controlled by the crown.

• Crown Position: Recessed at the 4 o'clock position. 

The watch was a popular "5 Sports" model designed for rugged daily wear. Original models often had a brushed circular finish on the case and a stainless steel bracelet