Seiko Cal. 6399 - 240

The Seiko 6399-240 represents an important milestone in Seiko's 1999 lineup. Powered by the 6399 caliber with 26j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-43168b6862ba]

Also known as: Monster, Baby Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1999

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