Seiko Cal. 4577 - 827

The Seiko 4577-827 represents an important milestone in Seiko's 1977 lineup. It features a White dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-033926a85c88]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

White

Jewels

21j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1977

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