Seiko Cal. 6397 - 745

The 6397-745 is a sought-after Solar piece from Seiko's golden era. Powered by the 6397 caliber with 35j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-543bfcba291a]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Green

Jewels

35j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1975

Related Models

• Seiko 5273-692
• Seiko 3816-401
• Seiko 0764-260
• Seiko 4444-777
• Seiko 7150-182
• Seiko 5678-650
• Seiko 4430-193
• Seiko 7024-597
• Seiko 5231-735
• Seiko 0782-985
• Seiko 5668-956
• Seiko 4528-497