... speakerportable laptop computer speakerHi-Fi speakerplay music from built-in flash or memory cardmusic formats: APE, MP3, ... WAV, ASF, OGG, WMAline-in: via 3.5mm audio cable, from MP3 payer, ... ~108MHZcard reader: play music form memory cardsbuilt-in lithium batteryHI-FI: with two speakersalarm function by ... portable mini speakers with rechargeable built-in lithium battery and flashlight