Good to know - This HoMedics Modulair knee wrap's 4 programs help ease your aches and pains with compression massage - With 5 intensity levels and 3 heat settings you can switch things up based on your pain level- Use it while you're watching the TV - it runs super quietly- The velco closure makes it quick and easy to put on and take off - You get 5 hours of runtime from the Modulair Battery system (sold separately)