Seiko Cal. 6646 - 932

The 6646-932 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6646 caliber with 34j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-4f2c99d527cc]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Silver

Jewels

34j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1984

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