It does have universal dual voltage system. You will need an adapter to fit the outlet but not a transformer. I am not sure what type of outlet is used in Poland. You can buy a kit with a transformer and adapter to fit various outlet styles inexpensively. Business stores, luggage stores, etc. carry these kits.
Well the charger power supply says 100-240 volt, 50-60 Hz input. It has a two prong plug so it should work with the two prong european adapter. EU-PLUG: i.Trek US to European Plug Adapter Either way it wouldn't take much for this to work anywhere. Call 1-800-338-0552 and ask Panasonic.