Seiko Cal. 5638 - 833

The 5638-833 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5638 caliber with 35j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-2d30959e561b]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

39mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1987

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