Every Device and Accesory is certified to comply with the highest standards for at least the following period of time since their manufacturing date:
Necbox (Enobios / Starstims): 5 years since the Kit Manufacturing Date
Electrodes: 2 years
Headcaps: 5 years
Signa Gel: Not determined by manufacturer
This does not mean that devices / accesories will under-perform, just that they have not been tested after that period of time and we can not guarantee the highest performance.