Seiko Cal. 6621 - 228

The Seiko 6621-228 represents an important milestone in Seiko's 1968 lineup. It features a Silver dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-ac9f2bdbefd9]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

46mm

Case Thickness

14.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Silver

Jewels

29j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1968

Related Models

• Seiko 7018-846
• Seiko 6323-465
• Seiko 4425-849
• Seiko 5656-947
• Seiko 7023-800
• Seiko 0727-806
• Seiko 4497-534
• Seiko 4436-731
• Seiko 4562-437
• Seiko 6160-795
• Seiko 6298-775
• Seiko 4596-859