Features: Supports high definitions input. The high definitions input can convert to N and P systems. input is supported, but it cannot be converted to N system. It supports high-definitions input, converts it to signal output and then connection to other displays, such as LCD TVs. At the same time, it can also send signal out. Supports accompanying sound setting in the ranges of 4.5MHz-6.5MHz. It is analog tvs signal transmitters and a wireless signal converter. It supports imported N-system TVs, with accompanying sound 4.5-6.5 conversion, and supports high definitions to output and simultaneous transmission. The transmitting frequency is adjustable. It supports radio to receive tvs accompanying sound. Suitable for color TVs and black and white TVs. Specifications: Component:Metal Package Includes: 1Piece transmitters 1Piece Transmitting Antennas 1Piece USB Power Cable (5V Input Voltages) note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.