Seiko Cal. 5645 - 856

Released in 1974, the Cal. 5645 with design code 856 was part of Seiko's domestic market collection. Powered by the 5645 caliber with 36j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-ffd9ce054b59]

Also known as: Sea Horse, Flighty

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1974

Related Models

• Seiko 6361-446
• Seiko 5668-801
• Seiko 7113-357
• Seiko 5639-548
• Seiko 6659-512
• Seiko 6393-552
• Seiko 6327-606
• Seiko 4571-936
• Seiko 4543-926
• Seiko 5213-570
• Seiko 4570-789
• Seiko 6683-203