The Sony RM-MC33EL Remote Control is a silver unit designed for portable audio devices such as Walkman MiniDisc players. I bought this model for use with an MZ-RH1 MD Player. Made in Japan, this remote control is specifically compatible with Sony devices and offers wired connectivity for easy use. Its compact design and model specifically cater to Sony products, making it a convenient accessory for controlling your portable audio devices with ease. very good condition, see pictures for details.