Item Type: Sound Amplifier Programming Cable Material: Metal Package List 1 x Sound Aids Programable Cable 1 x Patch Cord 1Usage: Programable cable can achieve various functions, including adjust volume, select sound modes, adjust sound balance and frequency, etc. 2Better Listening: Sound aids programming cable helps hearing device users adjust listening experience, and get the best hearing experience. 3Stable Signal: Programable connect cable composed of excellent cables and connectors to ensure the accuracy and stability of signal transmission. 4Programming: Special wire for programming and testing sound aids, can realize a variety of programming and testing functions of sound amplifier. 5Excellent Metal: Sound aids programable cable made of metal material, firm and sturdy, which can be used for a long time without broken.