Power output: RMS 3W*1
Frequency response range: 1800Hz-80KHz
Signal-to-noise ratio: ≥80db
Sensitivity: 500mv
Impedance: 4HM(Ω)
Input: DC 5V
Speaker unit: 4Ω3W *1 external magnetic 16 cores
Battery Play Time Medium Volume: 2-3.5 hours
Battery capacity: 600mAh
Size: 603040 Polymer
Charging time: 3-6 hours