3.5mm Standard Stereo Receptacle For Easy Plug And Play Hookup. The CW Key button comes with a left and right hand switch, which can switch between left Dit right Dah, and right Dit left Dah. Dit & Dah Paddle Distance To The Center Contact Can Be Individually Adjusted. Which can be adjusted to the appropriate position according to personal habits. CW Key Morse base is made of three neodymium magnets, which can be easily attached to the radio shell, car cover and other iron objects, Won't move. Which is convenient for outdoor use. CW Key Morse product is made of stainless steel. The key paddle is magnetic return force. The weight is 0.24LB (106g).