Seiko Cal. 5646 - 656

Released in 1999, the Cal. 5646 with design code 656 was part of Seiko's domestic market collection. Powered by the 5646 caliber with 27j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-b7af2d12b5b6]

Also known as: Helmet, Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Cream

Jewels

27j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1999

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