Meidong MD-05 Bluetooth Speakers Premium Stereo Portable Wireless Speaker with Patented Enhance Bass for Beach Yoga Gift(Black) BOOM BASS: and LOUDER VOLUME: Equiped noise/wind reduction technology, Enjoy crisp sound with impressive volume. Powered by 2 x 7.5 W stereo precision acoustic drivers with 20Hz-20kHz frequency response, delivered more bass by one big subwoofers. Perfect for Outdoor Sports, Travel, indoor. NFC and TF FUNCTION: Scream your music from your iPhone, iPad, Tablet ,Android and more devices via bluetooth function; or tap the speaker with your phone to use the NFC function to connect in seconds; Support Micro SD and TF card playing when the battery dead in travel outdoor without charging condiction. Many ways to enjoy music without end your fun. BLUETOOTH 4.0: Advanced Bluetooth 4.0 offers an extended 33ft range (outside) so you can take your phone farther with connection and answer your phone with HD sound. Faster, farther and more efficient, steady connect more easily with you iPhone, iPad, androids and more. BREAKTHROUGH BATTERY PERFORMANCE: With Built-in Rechargeable high-capacity lithium-ion battery, it support 10 hour continues playing your music all day, non-stop (at half volume) on a full single charge about 2-3 hours.