Seiko Cal. 6630 - 510

The Seiko 6630-510 represents an important milestone in Seiko's 1989 lineup. It features a Black dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-bb91927122bc]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

11.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Black

Jewels

29j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1989

Related Models

• Seiko 4440-255
• Seiko 7074-710
• Seiko 6297-542
• Seiko 7078-577
• Seiko 4448-956
• Seiko 6321-581
• Seiko 7049-464
• Seiko 6143-281
• Seiko 6297-194
• Seiko 5662-316
• Seiko 5681-788
• Seiko 6341-815