Big sound. Compatible with Bluetooth. Enjoy wireless listening and calls with this high quality pocket-sized speaker! Bluetooth 3.0 technology. Wireless Range: 30 ft; Frequency Response: 50Hz-20kHz; Speaker Resistance: 4 (omega); Speaker Sensitivity: Greater than 85dB; Mic Sensitivity: -42dB +/- 2dB; Micro-USB to USB charging cable; 3.5mm auxiliary cable. Colorado company. FCC listed. CE listed. 3-4 hour play time. Features: Portable wireless speaker; 3-4 hours play and talk time; 3.5mm aux cable included. No Question Guarantee: If you are unsatisfied with our Hottips! product, please send the product with an explanation to the listed address with $9 for a replacement. Designed in Colorado, USA. Made responsibly in China. Made in China.