Driving system	Radio Sync Solar
Caliber Number	1B22
Case	Stainless steel
Case coating	Dia shield
Glass	Sapphire crystal
Glass coating	Super-clear coating
Drive duration	Operating for approx. 6 months (when fully charged), power save: approx. 1.5 years
Accuracy	±15 seconds per month (without receiving a GPS signal and at temperatures between 5°C and 35°C )
Water-resistance	10 bar
Magnetic-reluctance	Equipped
Size	H32.9mm × W25.5mm × D8mm
The perimeter of bracelet	175.0mm
Weight	48g
Others	Automatic reception function Manual reception function Reception result display function Automatic hand position alignment function Power save function Overcharge prevention function Full-auto calendar correct to the December 31, 2099 Radio signal receiving function (receives official standard radio signals from Japan, China, U.S.A., Germany and U.K.) Date display Time difference adjustment function Quick-start function