Seiko Cal. 5646 - 547

Seiko 5646-547

The 5646-547 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5646 caliber with 36j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-e31a755fc1c9]

Also known as: Sumo, Tuna

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
36mm
Case Thickness
10.4mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
90m
Dial Color
Navy
Jewels
36j
Frequency
36,000 bph
Power Reserve
44 hours
Year
1985

Related Models

seikata-wm-e31a755fc1c9