Seiko Cal. 4551 - 646

This Hand-Winding model from 1969 features a 45mm Titanium case. It features a Silver dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-3d46699c902e]

Also known as: Monster, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Silver

Jewels

32j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1969

Related Models

• Seiko 7062-148
• Seiko 4422-299
• Seiko 6344-909
• Seiko 4420-693
• Seiko 4460-854
• Seiko 6681-159
• Seiko 4456-794
• Seiko 6631-212
• Seiko 6366-660
• Seiko 6349-188
• Seiko 6346-919
• Seiko 0730-255