Seiko Cal. 7170 - 820

The 7170-820 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 7170 caliber with 24j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-300d50b6b38d]

Also known as: Bullhead, World Timer

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

38mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1974

Related Models

• Seiko 5618-440
• Seiko 6366-787
• Seiko 6677-413
• Seiko 5624-256
• Seiko 6143-733
• Seiko 6163-202
• Seiko 0741-554
• Seiko 7142-940
• Seiko 7023-904
• Seiko 5233-314
• Seiko 7120-831
• Seiko 5692-821