1.Input power:USB direct plug power supply(5V 500mA)2.Speaker specifications:2 inches X23.Frequency response:25HZ-20KHZ4.Impedance:4 o5.Power supply mode:USB DC5V6.Audio material:high gloss plastic7.Power amplifier output power:RMS 3W *28.Input interface:3.5mm stereo line input9.Adjustment form:wire-controlled volume adjustment10.Full-range speaker:2.0 inch paper-based hemp pulp fiber coneFeature of product1.stylish design,light and smart,easy to carry,it is personal companion for home travel2.simple to use,save space,with 2.0 channel stereo3.the original imported digital power amplifier increases the sound source reproduction to more than 99.3%. which is close to lossless4.the use of reinforced magnetic, high elastic rubber edge full-range speakers,the sound is powerful and exciting5.the appearance is simple,fashionable and dynamic,and the music performance is more perfect6.the cavity conforms to the principle of acoustic design ,with a soft tone and clear layers ,7.green low-energy digital power amplifier,high effciency and energy saving8.USB power supply cable plug, which can be directly inserted into any USB port9.can link to any audio source using 3.5mm standard plug