Seiko Cal. 3891 - 937

The 3891-937 is a sought-after Solar piece from Seiko's golden era. It features a White dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-39c71e97af1e]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

45mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

White

Jewels

19j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1967

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