Seiko Cal. 6311 - 555

The 6311-555 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6311 caliber with 27j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-79f92158939d]

Also known as: Tuna, UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1996

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