Seiko Cal. 6399 - 445

The Seiko 6399-445 represents an important milestone in Seiko's 1968 lineup. It features a Black dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-6fa937038940]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

34mm

Case Thickness

10.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1968

Related Models

• Seiko 6644-937
• Seiko 6363-372
• Seiko 4453-433
• Seiko 5246-918
• Seiko 4575-433
• Seiko 7147-920
• Seiko 7130-290
• Seiko 6225-373
• Seiko 3892-491
• Seiko 6275-462
• Seiko 7191-783
• Seiko 6616-495