Seiko Cal. 4420 - 201

The 4420-201 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Green dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-39e744c19f24]

Also known as: Monster, Bullhead

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1974

Related Models

• Seiko 7061-442
• Seiko 6373-281
• Seiko 7164-479
• Seiko 0721-179
• Seiko 7063-659
• Seiko 6649-788
• Seiko 6148-837
• Seiko 5694-911
• Seiko 6217-779
• Seiko 7114-694
• Seiko 5645-946
• Seiko 4514-792