Seiko Cal. 6388 - 947

The Seiko 6388-947 represents an important milestone in Seiko's 1978 lineup. Powered by the 6388 caliber with 29j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-01395662d4bf]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

41mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

29j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1978

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