... 3.5mm audio jack FM ,1.5"speaker,3W external Li battery,500mAh/DC 5V mini speaker:220*70 ... 220(L)*70(W)*38(H)mm4,it has external LI battery,5 hours non-stop playing5,good bass ... L)*70(W)*38mm(H)input voltage:DC5v charger/USB line,500HAM,5hoursbatteryExternalweight:271.6g process of manufacture ... 5mm audio cable connect external sound source such as PC,phone,MP3 player.etc1 pcs USB cableconnect your PC for ...