This Homedics Modulair calf massager has 4 compression settings, allowing you to choose the level that best suits your needs for tired legs. It offers up to 5 hours of use on a single charge, providing ample time to relieve achy calves. You can select from 5 intensity levels, ranging from a higher setting for post-workout relief to a lower setting for gentle unwinding. The soft-touch fabric and adjustable velcro strap ensure a snug fit around your muscles. It operates quietly for a relaxing evening experience and features a rechargeable battery, eliminating the need for trailing cables during use.