Seiko Cal. 5645 - 784

The 5645-784 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5645 caliber with 23j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-bb1cb0f88dc7]

Also known as: Monster, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1980

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