Seiko Cal. 5646 - 109

The 5646-109 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5646 caliber with 21j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-41290ec3a938]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

13.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

170m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1998

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