Seiko Cal. 5237 - 170

The 5237-170 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5237 caliber with 31j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-8827a59df67b]

Also known as: Sumo, UFO

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

9.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1975

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