USB 2.0 speaker 354B

Power supply: 3.7V 18650 lithium battery Impedance: 4 Ω Power: 8W Interface: USB head TF、 Speaker: 2.5 inches Function: VOL, USB, TF, FM, BT SNR SUR: ≥ 82dB Frequency response FR: 40Hz-20KHz Product size: L154 × D120 × H215 mm Input sensitivity: 600mV Color: Wood

Power supply: Lithium battery 3.7V Impedance: 4 Ω Power: 5W × 2 11>Interface: USB head TF、 Speaker: 2 inches x 2 Function: VOL, USB, TF, FM, BT, AUX SNR SUR: ≥ 83dB Frequency response FR: 40Hz-20KHz Product size: L300 × D90 × H88 mm Input sensitivity: 600mV Color: Wood grain

Power supply: 3.7V 18650 lithium battery Impedance: 4 Ω Power: 3W × 4 11>Interface: USB TF 3.5 hole Speaker: 2 inches x 4 Function: Knob tuning, Bluetooth, USB、TF、FM、AUX SNR SUR: ≥ 85dB Frequency response FR: 40Hz-20KHz 13>Product size: L360 × D93 × H106 mm Input sensitivity: 600mV Color: Wood grain

Power supply: 3.7V 18650 lithium battery Impedance: 4 Ω Power: 5W × 2 11>Interface: USB head TF、 Speaker: 2 inches x 2 Function: VOL, USB, TF, FM, BT SNR SUR: ≥ 82dB Frequency response FR: 40Hz-20KHz Product size: L240 × D112 × H190 mm Input sensitivity: 600mV Color: Wood grain