Go Rock Black Portable Mini Stereo Speaker with Retractable Cable for iPhone / iPod / iPad TRMS02S-BK

Go Rock Black Portable Mini Stereo Speaker with Retractable Cable for iPhone / iPod / iPad TRMS02S-BK Type: Portable Speaker Compatible Phone Manufacturer: iPhone / iPod / iPad Features: Maximum play time for about 6 hours Li-polymer battery input: DC 5V Power output: 4W Speakers: D36mm Easy charging via USB or AC Single-retractable cable built in Extendable resonance of the bass box technology enables stronger effect Mechanism in side for easy cable retraction and storage Built-in magnetic lock to secure two-piece speakers into one when not in use Standard 3.5mm audio plug, apply with all music player, NB / PCs, iPod and iPhone