Seiko Cal. 6388 - 856

The 6388-856 is a sought-after Solar piece from Seiko's golden era. Powered by the 6388 caliber with 36j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-00b1f4ef57ee]

Also known as: Navigator

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Silver

Jewels

36j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1980

Related Models

• Seiko 6374-550
• Seiko 6310-845
• Seiko 7144-692
• Seiko 4582-850
• Seiko 6637-884
• Seiko 6642-483
• Seiko 0785-360
• Seiko 6168-348
• Seiko 7019-596
• Seiko 5262-795
• Seiko 7161-115
• Seiko 7025-981