Seiko Cal. 6685 - 651

The Seiko 6685-651 represents an important milestone in Seiko's 1981 lineup. Powered by the 6685 caliber with 18j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-e3dd3c271d14]

Also known as: Helmet, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

13.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

18j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1981

Related Models

• Seiko 4426-245
• Seiko 6155-876
• Seiko 5254-978
• Seiko 3835-544
• Seiko 7087-882
• Seiko 5292-743
• Seiko 6620-546
• Seiko 6272-211
• Seiko 0795-117
• Seiko 5264-116
• Seiko 7071-122
• Seiko 7194-581