Seiko Cal. 6644 - 861

The 6644-861 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6644 caliber with 20j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-37e2116d292d]

Also known as: Bullhead, Golden Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Silver

Jewels

20j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1990

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