Seiko Cal. 6649 - 977

The 6649-977 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6649 caliber with 30j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-7b2358ba21b5]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Champagne

Jewels

30j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1977

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