Current Production
Coutura Radio Sync Solar Chronograph
SEIKO SSG021
MSRP
$725 USD
Verified Aug 18, 2026
Case diameter44.5 mm
Thickness11.5 mm
Case materialStainless steel case with black ion finish
CrystalSapphire crystal
Water resistance100 m
MovementRadio Sync Solar, Caliber 8B92, Powered by light energy - no battery change required, 6-month power reserve once fully charged
Calibre8B92
DialBlack
Bracelet or strapStainless steel bracelet
Specifications as published by Seiko →
Last verified Aug 18, 2026