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Power supplier: DC5V
Output power: 3W*2 (1KHz, THD10%)
Frequency:100- 18KHZ
Signal & noise ratio: ≥95dB
Impedance:4 OHM(Ω)
Li-ion Output: 3.7V~4.2V+0.05V
Li-ion Input: 5V
Lithium battery capacity: 4000MAH
Speaker Unit: 40MM*2
Case Material: ABS
Dimensions:13.5*7*3.3CM
Weight: 300g