Rowin Nano Looper Sound on Sound 30 minutes storage - super tiny Excellent Little Sound on Sound Looper. Latest version from Rowin with options for Normal-Reverse- and 1/2 Speed Playback!! Infinite Overdubs. Great for pratice or creating soundscapes. 10 mintue recording time. Space saving design. Please note- this unit does not come with it's own power supply, but standard 9V (neg center) and readily available anywhere. First time for sale- very latest version!