Seiko Cal. 6644 - 863

Released in 1968, the Cal. 6644 with design code 863 was part of Seiko's domestic market collection. Powered by the 6644 caliber with 23j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-44c536d4f51c]

Also known as: Samurai, Panda

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Champagne

Jewels

23j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1968

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