Seiko Cal. 6318 - 639

The Seiko 6318-639 represents an important milestone in Seiko's 1994 lineup. Powered by the 6318 caliber with 26j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-3dabcefe6526]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Black

Jewels

26j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1994

Related Models

• Seiko 6341-191
• Seiko 5690-524
• Seiko 7059-271
• Seiko 0776-935
• Seiko 7089-560
• Seiko 6680-843
• Seiko 4542-942
• Seiko 6255-132
• Seiko 7058-600
• Seiko 4492-262
• Seiko 4521-834
• Seiko 4598-444