Macally PodWave Speaker Review
Due to the Podwave's small size and their ability to plug in the top of a player, they would be more ideal for playing audio books or listening to voice recordings. For playing music they may disappoint many, but in the case of traveling extremly light then they might well suffice.
Price: £4.99 Available from 
Specifications
- Active Power:550mW per channe;
- Power Supply: 1 x AA Battery last 8 hours