Seiko Cal. 5646 - 587

The 5646-587 is a sought-after Solar piece from Seiko's golden era. Powered by the 5646 caliber with 17j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-fdcdce788663]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

39mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1989

Related Models

• Seiko 5650-171
• Seiko 3895-516
• Seiko 5682-453
• Seiko 6316-543
• Seiko 5298-962
• Seiko 6173-625
• Seiko 4477-198
• Seiko 6369-657
• Seiko 4598-440
• Seiko 4536-650
• Seiko 6190-760
• Seiko 7034-895