Version V5.0 of Bluetooth Ten meters is the transmission distance. Power output: 5W Full-range speakers 4-inch stereo bass Response to frequency: 100 Hz–20 kHz ABS is the product's material. Voltage built in: 3.7V Ratio of signal to noise: 70 dB 500MA is the battery's capacity. Swipe to change the volume. Support for automatic pairing Playtime: two to three hours Audio input: U disk, TF card, and Bluetooth Size of the product: The dimensions are 235 x 108 x 108 mm. The packing size is 245 x 134 x 114 mm. 341g is the net weight. 456g is the gross weight.