GOgroove SonaSPHERE Portable Mini SpeakerBIG Sound The GOgroove SonaSPHERE provides powerful sound in the palm of your hand! Powered by a 40mm driver, the expandable body opens to add more bass & provide higher sound dispersion! You can also adjust volume with the onboard control knob.Portable, Rechargeable, Linkable Carry in your pocket or use the included lanyard for your wrist or neck when you"re on-the-go. Enjoy hassle-free audio at the beach, by the pool or even camping. Charge it (USB cable included) for just two hours for 2-3 hours of max volume playback, or leave it plugged in while you rock out! Connect multiple SonaSPHEREs to each other for a stunning surround-sound atmosphere that you"ll have to hear to believe!Backed by 3-Year Manufacturer"s Warranty!Compatible With: Acer Iconia A100 / A200 / A500 / A501 Apple iPad / iPad 2 / iPad 3 Retina Archos G9 80 / 101 Arnova 7 , 9 , 10 ASUS Google Nexus 7 , Eee Pad Transformer / Prime / Slider / Slate / MeMO Barnes & Noble Nook HD Plus , HD BlackBerry PlayBook Coby Kyros MID1042-8 , MID7033-4 , MID7042-4 Dell Streak 7 / 10 Pro / Latitude ST Fusion Garage JooJoo / Grid 10 HP Slate 8 / TouchPad HTC Jetstream / Flyer / Evo View Huawei Ideos S7 / T-Mobile SpringBoard Kobo Vox Lenovo Ideapad A1 / K1 / K2 / P1 Microsoft Surface Pro , RT Motorola XOOM / Droid Xyboard 8.9 / 10.1 Panasonic Toughpad A1 / B1 Pandigital SuperNova / Nova / Star / Planet Pantech Element Samsung Google Nexus 10 / Galaxy Note 10.1 / Tab 2 - 7 , 2 , 7 Plus , 7.7 , 8.9 , 10.1 Sony Xperia Tablet Z / S / P Toshiba Thrive / Excite X10 Velocity Micro Cruz T510 / T507 / T410 / T408...and virtually ANY audio device with a headphone jack!