Seiko Cal. 5618 - 236

The Seiko 5618-236 represents an important milestone in Seiko's 1990 lineup. Powered by the 5618 caliber with 33j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-f841c55c6e23]

Also known as: Monster, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1990

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