GOgroove Portable Bluetooth Speaker with AUX Input, Rechargable 16+ Hour Battery, Stereo Sound - Built-In Microphone, On Board Controls for Calls/Track Selection (Starship Blue) COMPACT & PORTABLE bluetooth speaker is a great for on the go audio with near universal connectivity to your smart phone, tablet, or computer 16+ HOUR BATTERY LIFE keeps the party going||32 Hours of battery life at 50% volume and 16 Hours at 100% Volume BUILT IN MICROPHONE for taking calls & On Board Controls for track selection, Volume, and bluetooth pair button AUTO PAIR TO LAST DEVICE with on board memory so you automatically connect to the last device used with the speaker TECH SPECS - Speaker: 5W 70mm driver / Freq Range: 20Hz-20kHz / Battery: Li-polymer 3.7v, 1300mAh / Charging Port: USB to 3.5mm / AUX Port: 3.5mm / Dimensions: 4.75 x 4.75 x 4.75 in / 3-Year Warranty