The Fitnation Versatone EMS & TENS Belt provides dual muscle therapies allowing you to choose between toning and pain relief with a single device. Choose from 4 EMS modes for toning, sculpting, and strengthening, or 2 TENS modes for powerful pain relief of sore muscles and joints. The Versatone's unique design eliminates the need for messy gel pads, replacing them with a simple mix of salt and water in the included spray bottle. The rechargeable battery provides 90 minutes of treatment per charge - that's 6 full treatments per charge!