YIHUA 801 wireless receiver 1.Its design of portable and good appearance ... used for headphone,receive a stable signal YIHUA 801 wireless receiver Characteristics: * design of Portable * Imports of chips used ... receive, to receive a stable, beautiful sound * Fixed-frequency receiver, sound quality adjustable * The use of two AAbatteries * 3 ... N Ratio>60dBFM Frequency38-88MHz YIHUA 801 wireless receiver