mini speaker

Specifications 1. an outer amplifier with two inputs

2.One 3.5mm input for your MP3/MP4 and other devices

3.One USB input for your PC/Laptop

The Magic Ball  music system is powered by an outer amplifier with two inputs. One 3.5mm input for your MP3/MP4 and other devices. One USB input for your PC/Laptops. You Simply plug these speakers into your USB port or you can use optional AC adapter and enjoy your music anywhere!   Features:    l         Vivid shape, fine purely handmade work Stereo effect, smooth sound l         Multi-functional digital port for plug & play (compatible to various output devices) l         Built-in drive-free sound card l         Digital audio decoding amplifier l         Nontoxic materals   Function:   Rated Output: 2W*2 Max. Output: 3W*2 Rated Input: DC 5V/ 500~800mA Frequency: 40Hz±20KHz   Sensitivity: 75±5dB   Signal Input: 300-500MV   SNR: 85db   Loudspeaker impedance: 4 ±15%   Distortion: 5% Max