Seiko Cal. 6634 - 856

The 6634-856 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Champagne dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-cf398ad718a7]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Champagne

Jewels

29j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1976

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