Seiko Cal. 3864 - 644

The Seiko 3864-644 represents an important milestone in Seiko's 1968 lineup. Powered by the 3864 caliber with 23j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-b8bd90e9d0f0]

Also known as: Panda, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Cream

Jewels

23j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1968

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