good quality TF card/USB/FM radio

. Operation of funtion keys 1. PLAY/PAUSE: Shot press (hold less than 1 second, similarly hereinafter) when playing, it's play/pause. Long press (more than 2 seconds, similar ly hereinafter) will choosing circulation pattern. If radio state, short press will show the existing channel, long press will searching channels automatically and save it. 2. PREV: Playing state: short press it's prev song, long press is turn down the volume. Radio state: short press will change the fr equency forward, long press will scaning the channels forward. 3. NEXT: Playing state: short press it's next song, long press is turn up the volume. Radio state: short press will change the fre quency back, long press will scaning the channels back. 4. STOP: Short press it's stop when playing sate. Radio state: short press will searching channels automaically and save it. It will show the p ower indicate when long press the key any conditions. 5. MODE: Short press is changing the audio source (USB/SD/RADIO/OFF). Long press is chossing the sound effect when is playing. 6. REPEAT MODE: When playing, Press the key choose repeat mode. 7. SOUND EFFECT: When playing, Press the key choose sound effect.

      Features

Power Output: 25WFrequency response: 100Hz---10KHz(±3dB)Charing voltage:10V/350mAOperating voltage: 7.4V/1000mAH (built in Lithium battery)Operating temperature:-10°C~45°CDimensions: 125X55X87mmWeight: 355g30PCS IN ONE CARTONColour:black,gray

Accessories 

Voice amplifier : 1 PC Power adaptor : 1 PC User's manual : 1 Copy  Microphone:1 PC

Belt : 1 PC

Portable amplifier OG-898