Seiko Cal. 6388 - 940

The Seiko 6388-940 represents an important milestone in Seiko's 1968 lineup. Powered by the 6388 caliber with 19j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-f21cc350411f]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

8.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Green

Jewels

19j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1968

Related Models

• Seiko 5226-160
• Seiko 4515-226
• Seiko 6113-663
• Seiko 6660-225
• Seiko 4480-339
• Seiko 6694-504
• Seiko 0757-675
• Seiko 6624-180
• Seiko 0712-124
• Seiko 0773-838
• Seiko 6111-592
• Seiko 3898-923