Sharper Image SBT3002WH Bluetooth Wireless Retro Speaker, Tabletop Portable Sound System (White) Old school meets new school with the Retro Wireless Speaker from Sharper Image. The speakers vintage design may evoke an era gone by, but its features are certainly not stuck in the past. Connect Bluetooth-enabled smartphones, tablets, or MP3 player and play back your favorite jams in classic premium stereo sound. Adjust bass and treble by tweaking the knobs on the control panel, just the right touch to accentuate each note. Its compact and rechargeable design allows for easy portability and placement anywhere without searching for an outlet.