Seiko Cal. 5658 - 770

The Seiko 5658-770 represents an important milestone in Seiko's 1986 lineup. Powered by the 5658 caliber with 26j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-02a299f5aa05]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Cream

Jewels

26j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1986

Related Models

• Seiko 4569-898
• Seiko 6636-844
• Seiko 5695-429
• Seiko 6236-780
• Seiko 5271-993
• Seiko 6356-696
• Seiko 7126-653
• Seiko 7028-453
• Seiko 5653-171
• Seiko 7031-169
• Seiko 6630-195
• Seiko 5648-689