Seiko Cal. 6375 - 398

Released in 1965, the Cal. 6375 with design code 398 was part of Seiko's domestic market collection. The Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-38aa191bb3c9]

Also known as: Sumo, Arnie

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1965

Related Models

• Seiko 6636-597
• Seiko 6252-599
• Seiko 6265-503
• Seiko 5256-738
• Seiko 5644-258
• Seiko 6345-729
• Seiko 5277-313
• Seiko 5637-308
• Seiko 6689-915
• Seiko 7160-392
• Seiko 7148-727
• Seiko 4590-907