This tiny receiver is not much bigger than an AA cell. It is powered off two LR44 button cells, which are expensive and I assume wouldn`t last terribly long. I`ll be on the lookout for LR44`s at the markets and $2 shops now that I`ve got this radio! As with all these sorts of radios, the headphone lead functions as the aerial. Supplied with this receiver were a pair of those awful .