Seiko Cal. 6644 - 313

Released in 1967, the Cal. 6644 with design code 313 was part of Seiko's domestic market collection. It features a White dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-dfc5ec330403]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

White

Jewels

17j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1967

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