Seiko Cal. 5640 - 367

Released in 1981, the Cal. 5640 with design code 367 was part of Seiko's domestic market collection. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-721281ea7ff0]

Also known as: Panda, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1981

Related Models

• Seiko 6672-782
• Seiko 7134-215
• Seiko 7016-181
• Seiko 6222-931
• Seiko 5264-379
• Seiko 6296-874
• Seiko 6627-972
• Seiko 5676-880
• Seiko 3864-879
• Seiko 6218-244
• Seiko 4412-677
• Seiko 4514-488