Hi Phil. The Wave is indeed the other very portable walkman style player. I prefer it to the Vibe as it has advanced daisy functionality controlled by a numeric pad located on the top of the unit. You can use three types of batteries, the one's which are supplied with the machine are rechargeable from within the unit and give around 8 hours play. You can also use normal nonhuman rechargeable batteries however these will not recharge in the unit so have to be externally recharged. I did think this was a ploy to make you buy replacement Human batteries, however it is actually correct as I tried charging non Human rechargeable in the unit and it didn't work. Finally from a battery perspective you can use normal double A batteries and good makes will often out perform rechargeable batteries. Operationally it's quite fast, although slightly slower than desktop style players. The sound reproduction is very good. It will play standard Audio CD's, MP3, wav wma and Daisy material. The only annoying thing about the unit I find is that for some reason when you are playing books using mains power the batteries do not recharge. Hope all this is helpful. ** To leave the list, click on the immediately-following link:- ** [mailto:access-uk-request@xxxxxxxxxxxxx?subject=unsubscribe] ** If this link doesn't work then send a message to: ** access-uk-request@xxxxxxxxxxxxx ** and in the Subject line type ** unsubscribe ** For other list commands such as vacation mode, click on the ** immediately-following link:- ** [mailto:access-uk-request@xxxxxxxxxxxxx?subject=faq] ** or send a message, to ** access-uk-request@xxxxxxxxxxxxx with the Subject:- faq