Seiko Cal. 6318 - 821

The Seiko 6318-821 represents an important milestone in Seiko's 1981 lineup. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-3687806c7821]

Also known as: Sumo, UFO

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1981

Related Models

• Seiko 0789-224
• Seiko 6223-969
• Seiko 4485-846
• Seiko 0753-398
• Seiko 4456-678
• Seiko 6371-879
• Seiko 6387-439
• Seiko 0779-334
• Seiko 7117-341
• Seiko 6333-658
• Seiko 7049-171
• Seiko 5613-189