Seiko Cal. 6620 - 381

The Seiko 6620-381 represents an important milestone in Seiko's 1972 lineup. The Coin-Edge bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-52994299609f]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Solar

Case Material

Titanium

Case Width

34mm

Case Thickness

9.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Burgundy

Jewels

36j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1972

Related Models

• Seiko 4499-500
• Seiko 6194-979
• Seiko 3814-404
• Seiko 5644-542
• Seiko 7162-442
• Seiko 4442-756
• Seiko 4445-332
• Seiko 3816-321
• Seiko 6230-696
• Seiko 0772-725
• Seiko 6636-923
• Seiko 3899-717