Seiko Cal. 4540 - 864

Released in 1972, the Cal. 4540 with design code 864 was part of Seiko's domestic market collection. Powered by the 4540 caliber with 24j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-9d0a9fb6c6b1]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Navy

Jewels

24j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1972

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