How long till your iPod's battery cries out for juice? Ten hours? Twelve hours? Twenty hours? How about 305 hours?
Yes, the near two-week battery powered music player is here and it's courtesy of Sony's now ancient MiniDisc. Japanese maker Victor has built the XM-C37 to compete with newer MP3 players that give up the ghost after less than a day's constant use.
We don't think it'll hail the revival of little plastic discs but it's perhaps another reason why you might want to give them a try. The format's managed to re-invent itself over the years with Net-MD - allowing you to drag and drop MP3s onto a disc - and Hi-MD. which enhanced the drag and drop interface and increased capacity to 1GB. That's up to 45 hours of music on discs costing less than a fiver each.
Of course, you'll have to put up with Sony's over-protective transfer restrictions for MD, which mean the format's still nowhere near as easy to use as hard disk players such as the lovely iPod and generously-featured Zens.
If you fancy it, this player comes in three colours and looks like a slim package with an external remote. Good luck finding one here but check out Sony and Aiwa's models - the only people still selling Minidisc in the UK.