Geepas HT portable rechargeable mini speaker has built in High-capacity rechargeable lithium battery 1200mah. Can be charged via USB/ Power adapter. U disk directly decode/SD/MMC on the Mp3 music format. Supports a variety of audio (MP3,MP4,Walkman,computer,cellphone,etc.). Karaoke function with 2 mic input socket. Full-function remote control|Code mic with 5 M cable. Equalizer and Digital display|Bluetooth function . FM Radio. Speaker unit: 4"+5". Frequency response: 80Hz-18KHz. Signal noise ratio: 85dB