Compact and portable wireless Bluetooth speaker with a sleek transparent design, delivers crystal-clear sound, lightweight and easy to carry, features long battery life, universal compatibility, and stylish aesthetics, perfect for home, office, or travel. Product information: Power type: lithium battery Color: M9 dual speaker -- white, M9 knob-black, M9 touch-black, M9 touch-White Frequency range: 100HZ-20KHZ Rated Voltage: 5W Additional features: card insertion Rated Power: 6W