Seiko Cal. 6399 - 366

The 6399-366 is a sought-after Solar piece from Seiko's golden era. It features a Silver dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-1b431e46a9b6]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Titanium

Case Width

45mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Silver

Jewels

25j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1990

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