Good to know- This Homdics Modulair calf massager has 4 compression settings -choose the one that feels best for your tired legs- It lasts up to 5 hours on one charge, giving you plenty of time to ease those achy calves- Choose from 5 intensity levels - crank it up for post-workout relief or bring it down to unwind gently- The soft-touch fabric and adjustable velcro strap hug your muscles nice and snug- Its quiet operation means you can use it while enjoying your favourite show - You can kick back on the sofa with no wires to get in your way