Size: about 20 x 14.4 x 5.4 cm;Built-in rechargeable battery, USB charging1. Frequency rangeFM: 87.5-108(64-108)MHzLW: 150-450kHzSW: 1711-29999kHzAIR: 118-137MHz2. Sensitivity:FM < 3uVLW < 10mV/mMW <0.5mV/mSW < 10uV