Seiko Cal. 6399 - 499

The 6399-499 is a sought-after Spring Drive piece from Seiko's golden era. It features a Navy dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-fce7c2f6b8e2]

Also known as: Helmet, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1981

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