Material:aluminum

size:5*5*5cm

Colors:black,blue,red

Connects to your mobile device using wireless Bluetooth® technology or through the 3.5mm audio cable (not provided)  Includes rechargeable lithium-ion battery that charges through USB port 

 Rated Impedance: 4 Ohm; Rated Power: 3w; Speaker: 1.6 inches; Rated Voltage: DC 5V; Aux in: 3.5mm audio jack; Frequency response: 280HZ-16KHz; SNR: = 95d; Sensitivity: 80db ± 2db; Distortion: = 0.3%