After getting a Zen Stone you may consider to get one of this the Creative TravelSound ZEN Stone speaker system. It is powered by two AAA batteries and will give you 20 hours of playback. It can still work without batteries as long as the power amplifier is not turned on. It is compatible with Zen Stone and also the new released Zen Stone Plus. Creative TravelSound ZEN Stone speaker system will be released next month and priced at $45.

[via Ubergizmo]