Seiko Cal. 6634 - 757

Released in 1976, the Cal. 6634 with design code 757 was part of Seiko's domestic market collection. It features a White dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-eebf27abd9ca]

Also known as: Monster, Emperor

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

White

Jewels

30j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1976

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