Seiko Cal. 3897 - 721

The 3897-721 is a sought-after Solar piece from Seiko's golden era. It features a Navy dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-15c7b2163dcd]

Also known as: Crown, Emperor

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Navy

Jewels

32j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1965

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