ArtDio 2.0 Portable Speaker System-Model MS-70
I bought my ArtDIO 2.0 speaker system for like $5 on clearance at Best Buy.  One of the best purchases I have ever made.  Here are some of the features and why I like them:    Power: 3x AAA 1.5v battery powered or USB via supplied cable   - I used rechargeable AAA's and these lasted over 5 months while the device was in storage.  Sustained playback time was about 14 hours.   - extremely bright blue LED indicating power is on the front.  You won't need a night light if you have this speaker turned on... but 