Seiko Cal. 7155 - 510

Released in 1972, the Cal. 7155 with design code 510 was part of Seiko's domestic market collection. It features a Champagne dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-dbd7ce492426]

Also known as: Sumo, Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Champagne

Jewels

24j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1972

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