Seiko Cal. 6621 - 257

The Seiko 6621-257 represents an important milestone in Seiko's 1976 lineup. It features a Green dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-f30fc638e9f6]

Also known as: Silverwave

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Green

Jewels

33j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1976

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