Seiko Cal. 5610 - 641

The 5610-641 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-b2f2a13aa052]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Green

Jewels

22j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1972

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