This 2-in-1 massage roller relieves muscle tension and promotes relaxation, featuring high-quality stainless steel massage beads for smooth, effective soreness relief and improved circulation.Powered by a Li-Po 12500-5C 3.7V 500mAh battery, it fully charges in 1.7 hours and runs for over 60 minutes. With 3 adjustable speeds (336/400/460rpm), you can customize massage intensity easily.Left and right steering allows targeted massage on the back, legs, arms, etc. Compact and easy to use, it’s perfect for home, office or travel to keep muscles relaxed anytime.