Seiko Cal. 6621 - 510

This Spring Drive model from 1966 features a 35mm Two-Tone case. Powered by the 6621 caliber with 24j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-944326b3ff1b]

Also known as: Panda, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

24j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1966

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