Seiko Cal. 5621 - 378

The 5621-378 is a sought-after Solar piece from Seiko's golden era. It features a Green dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-070e43b074b6]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1965

Related Models

• Seiko 4473-455
• Seiko 4526-804
• Seiko 0727-549
• Seiko 6323-606
• Seiko 6657-626
• Seiko 4429-336
• Seiko 5622-749
• Seiko 4419-865
• Seiko 0776-852
• Seiko 7038-435
• Seiko 4560-663
• Seiko 4543-118