Seiko Cal. 6636 - 385

The Seiko 6636-385 represents an important milestone in Seiko's 1974 lineup. Powered by the 6636 caliber with 33j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-5bccce24b41d]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1974

Related Models

• Seiko 7065-154
• Seiko 3865-513
• Seiko 6190-315
• Seiko 6379-108
• Seiko 5233-637
• Seiko 0752-476
• Seiko 6624-585
• Seiko 0712-290
• Seiko 7084-903
• Seiko 6248-376
• Seiko 4599-515
• Seiko 5265-526