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 batteryColor: M9 dual speaker -- white, M9 knob-black, M9 touch-black, M9 touch-WhiteFrequency range: 100HZ-20KHZRated Voltage: 5WAdditional features: card insertionRated Power: 6W