Perifit

The Perifit is designed for 1000 training sessions of 10 minutes. So, you are good to use Perifit for at least 5 years if you use it 30 minutes a week. What happens when the battery is empty? If the battery is flat before the end of the first 5 years, you will get an immediate replacement of your Perifit. If the battery is dead after 5 years, you will have access to the replacement program which will allow you to obtain a new Perifit sensor for $50.