ASUS has announced the launch of its latest SP-BT23 Wireless portable stereo speaker. The speakers were exhibited at the CEBIT 2008. They are very light in weight. These highly portable speakers let the users listen music from almost any device with Bluetooth output (A2DP). You can also listen to the music played on NB, mobile phone, MP3, thanks to analogue line-in profile support. ASUS SP-BT23 Wireless speakers derive power from 4xAA batteries.