Seiko Cal. 7099 - 637

The 7099-637 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7099 caliber with 33j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-d01ca7b546da]

Also known as: Helmet, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1970

Related Models

• Seiko 6343-970
• Seiko 5660-654
• Seiko 3824-570
• Seiko 3887-245
• Seiko 7183-244
• Seiko 7091-189
• Seiko 6640-727
• Seiko 5270-549
• Seiko 6635-233
• Seiko 7051-372
• Seiko 0764-651
• Seiko 5286-318