Seiko Cal. 5646 - 770

The Seiko 5646-770 represents an important milestone in Seiko's 1976 lineup. Powered by the 5646 caliber with 30j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-0da7b23d5d6d]

Also known as: Pogue, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

14.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Silver

Jewels

30j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1976

Related Models

• Seiko 6161-380
• Seiko 0741-512
• Seiko 5643-472
• Seiko 5649-168
• Seiko 0736-732
• Seiko 0793-328
• Seiko 4496-321
• Seiko 7046-934
• Seiko 7164-947
• Seiko 6361-594
• Seiko 0783-776
• Seiko 4458-276