Seiko Cal. 7131 - 365

The 7131-365 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Silver dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-f4736ff6ff78]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Silver

Jewels

28j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1984

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