Seiko Cal. 6637 - 699

The Seiko 6637-699 represents an important milestone in Seiko's 1973 lineup. Powered by the 6637 caliber with 24j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-cde1023a79d9]

Also known as: Panda, Helmet

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

40mm

Case Thickness

13.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1973

Related Models

• Seiko 5228-271
• Seiko 7163-245
• Seiko 5694-546
• Seiko 7187-396
• Seiko 0742-269
• Seiko 4558-994
• Seiko 5624-192
• Seiko 6358-279
• Seiko 6655-227
• Seiko 3877-717
• Seiko 0779-971
• Seiko 6244-884