Hi have a second hand Nokia 770 which came with most accessories. Based in UK but charger is an AC 4U two pin plug which i have not seen before in UK. Voltage says 100-240. It looks like US style plug but not sure whether can use simple plug adapter for this? This is probably quite simple but dont want to ruin the thing. Product box says Made in Estonia. Ive looked on youtube sites and niether they or instructions show charge being connected to socket or with plug adaptor. What do i need to charge this to UK plug connection firstly? Thanks for your help im feeling like Homer Simpson.

Yes. The Nokia AC-4U accepts 100V to 240V AC at 50Hz or 60Hz, so it will work in the U.S., and with a simple plug adapter, it will work in the UK. However, if you're concerned, look for a Nokia power adapter with proper UK pins at a local discount electronics shop. Most likely, there's not much price difference between a plug adapter and an entire Nokia charger.