Seiko Cal. 5687 - 228

This Hand-Winding model from 1966 features a 46mm Two-Tone case. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-c583c7af6ec3]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

12.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1966

Related Models

• Seiko 6367-781
• Seiko 4464-651
• Seiko 4454-940
• Seiko 7129-179
• Seiko 4542-163
• Seiko 3859-128
• Seiko 3826-949
• Seiko 6241-428
• Seiko 4532-226
• Seiko 0785-679
• Seiko 6695-916
• Seiko 6342-165