Seiko Cal. 4537 - 766

Released in 1972, the Cal. 4537 with design code 766 was part of Seiko's domestic market collection. Powered by the 4537 caliber with 27j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-6850f8409ec2]

Also known as: Sumo, Panda

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1972

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