Features: 1) Output Frequency: 88.1,88.3,88.5,88.7,88.9 or 107.1,107.3,107.5,107.7,107.9MHz 2) Includes DC cable for optional battery-free operation. 3) Operating range: 10 - 30 feet (a distance of 10 feet or less will minimize. interference and provide the strongest signal). 4) Includes 2 AAA batteries so you can play your music anywhere. 5) Audio frequency range: 50Hz - 15kHz. Accessories 1>one car charger 2>two AAA batteries packing Blister card packing Packing: 50pcs/CTN Carton Size: 690*480*310mm N.W.: 8 Kg G.W.: 9.5 Kg