Ref. SPB285J1
Movement: 6R31
The Seiko, reference SPB285J1, has a steel case and a self-winding movement. Calibre 6R31 has a power reserve of 70 hours. Its precision is +25 to -15 seconds per day. A box-shaped sapphire crystal has an anti-reflective coating on the inner surface. Central seconds are displayed on the dial, and the watch is water resistant to 100 metres.
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Last updated 24 Oct 2026Suggest a correction
TECHNICAL SPECIFICATIONS
CASE
Case Material
Steel
Water Resistance
100m
Crystal
Sapphire Crystal
MOVEMENT
Movement Type
Automatic
Caliber
6R31
Power Reserve
70h
Jewels
24 jewels
FEATURES & COMPLICATIONS
Central seconds
