What are the dimensions of the Perifit? Perifit support team February 23, 2018 02:26 Updated Follow Related articles Perifit is sliding out during the workout, how to stop that? Is it actually healthy to have a device transmitting wireless signal inside the pelvic area? What is the battery life of a Perifit? What happens when the battery is empty? Can I use Perifit while pregnant? Is the Perifit waterproof? Comments 0 comments Article is closed for comments.