Seiko Cal. 5650 - 381

The 5650-381 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5650 caliber with 25j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-3f9e9c6a3171]

Also known as: Silverwave, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Silver

Jewels

25j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1975

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