DESCRIPTION: *Rated power：5W x 2 *Frequency：180Hz-20kHz *Signal-noise ratio：>75db *Deformation rate:<1% *Material: ABS + PC + silica + iron + cloth *Input voltage: DV5V-500mA *Lithium battery: 3.7V/600mA *Play time: 3-4h *Charging time: 1.5h *Receiving range: 10m *Weight: 338±g