Seiko Cal. 7181 - 253

Released in 1978, the Cal. 7181 with design code 253 was part of Seiko's domestic market collection. It features a Silver dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-bb81232ea5d9]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

12.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Silver

Jewels

22j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1978

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