Seiko Cal. 3899 - 347

The 3899-347 is a sought-after Quartz piece from Seiko's golden era. It features a Silver dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-4bac0fc38eb9]

Also known as: Sumo, UFO

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

14.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1978

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