Rechargeable Portable AUX IN Speaker Dock 3.5mm With Deep Bass (PSK3002GR) Easily Connect Your Smartphone, Kindle, iPad, iPhone, Andoird, Tablet, Galaxy, MP3 Player High-Definition Stereo Sound With Deep Bass And Clear Highs AUX IN (3.5mm) Function, Removable Strap For Easy Carrying, Top Cradle For Devices Two-Way Power: Rechargeable Lithium-Ion Battery (Included) Or 4 X AA (Not Included) Polaroid - Instantly Recognizable, Instantly Reassuring. Lets You Know You've Purchased A Product That Exemplifies The Best Quality Of Our Brand.