Seiko Cal. 6646 - 527

The Seiko 6646-527 represents an important milestone in Seiko's 1988 lineup. Powered by the 6646 caliber with 23j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-8edc3bc827c1]

Also known as: Sumo, Sea Horse

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

14.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1988

Related Models

• Seiko 3888-457
• Seiko 7186-864
• Seiko 7122-669
• Seiko 5645-792
• Seiko 5284-576
• Seiko 4463-183
• Seiko 3819-803
• Seiko 3847-238
• Seiko 4543-853
• Seiko 6176-501
• Seiko 7070-548
• Seiko 4432-211