i-Rocks USB powered flat speakers at Mwave $16 - save $20 + Plus cashback
- Panel speaker is derived from the sound technology in LCD TV, which is registered by NTX in UK
- Slim and compact size, easy to carry anywhere
- With USB bus power, no need for external power
- SurfaceSound technology delivers a remarkable diffuse sound field over a wide audio frequency bandwidth.
- The battery pack use four AAA batteries that you can simply replace when the charge is gone."
The cheapest price I can find for these elsewhere is $38