Seiko Cal. 6330 - 643

The 6330-643 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-a4609be4cf19]

Also known as: UFO, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1970

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