Toshiba announced a small <A HREF="http://www.dpreview.com/news/0406/04062401toshibafuel.asp">methanol fuel cell</A> which weighs just 8.5 g (0.3 oz) and can produce 100 mW of power. Toshiba describe this new unit as small enough for integration into a wireless headset for mobile phones, but still efficient enough to power an MP3 music player for as long as 20 hours on a single 2cc charge of highly concentrated methanol.