Seiko Cal. 5646 - 385

The 5646-385 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5646 caliber with 30j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-f52aa0cf8fa2]

Also known as: Monster, Helmet

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

8.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

White

Jewels

30j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1970

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