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Effective power: 3W (RMS)
Speaker: 40mm 4? 3W full range of external magnetic
Frequency response: 60Hz ~ 18kHz
Signal to noise ratio: ?75dB
Program: RDA, amplifier: Class D amplifier
Audio input FM, TF card (capacity ? 32G) U disk
Built-in battery: 300mA lithium battery
Play time: 1-3H
Charging time: 2-3H