Seiko Cal. 6678 - 641

The Seiko 6678-641 represents an important milestone in Seiko's 1981 lineup. Powered by the 6678 caliber with 24j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-6b8cbb01ed41]

Also known as: Panda, Baby Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

41mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Silver

Jewels

24j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1981

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