The Compex 50 x 50 mm Electrodes is used for muscle stimulation, is easy to use and can be applied by gently applying pressure using one hand. It optimizes the electric power for higher intensity sessions to deliver you comfort. These electrodes maintain optimal effectiveness for approximately 25-30 uses depending on the type of skin and conditions of use. It is compatible with some muscle stimulators of other brands with a push button system and can be used with them.