These electrodes will maintain optimal effectiveness for approximately 25-30 uses. Easy Snap™: Connection between the cable and the electrode, with one hand using simple pressure Comfortable: Optimisation of the electric power for higher intensity sessions, gauge of better effectiveness Reusable: Variable depending on the type of skin and conditions of use Adaptable: Possible use with muscle stimulators of other brands working with a push button system Compatible with COMPEX SP2.0, COMPEX SP4.0, COMPEX SP6.0, COMPEX SP8.0, COMPEX FIT1.0, COMPEX FIT3.0, COMPEX FIT 5.0, COMPEX WIRELESS, COMPEX MI-SPORT, COMPEX MI-FITNESS, COMPEX RUNNER, COMPEX VITALITY, COMPEX ENERGY MI-READY, COMPEX PERFORMANCE MI-READY, COMPEX FIT, COMPEX FULL FITNESS, COMPEX SPORT ELITE, COMPEX MI-SPORT 500, COMPEX MI-FITNESS TRAINER Easy Snap™: Connection between the cable and the electrode, with one hand using simple pressure Comfortable: Optimisation of the electric power for higher intensity