FREQUENCY RESPONSE RANGE: 100HZ-20KHZProcessing method: OEM processingPlayback format: MP3Whether there is a radio function: YesSpeaker adjustment mode: buttonsLogo printing: YesPower mode: USBColor: blue, black, red, gold, silver grayBuilt-in battery capacity: 500mAh-800mAhOutput power: 10W or lessChannel: 2.1Operation mode: press the buttonSupported format: TF cardSignal-to-noise ratio: ≥75dBExtended storage: 32GB