Wild Bee Wearable Heating Pad for Back, 660nm 850nm LED Energy Beads, Cordless Portable Heating Pad, Waist Belt Wrap with Heat 4 Levels Adjustable, 90 mins Battery, for Back Waist Elbow and Knee Compression Massager  (Black)

Dual 660nm Visible Red & 850nm Infrared LED Therapy 60 high-power LED beads deliver deep tissue penetration with fast warming. Four working modes: single 660nm, invisible 850nm, F10 strobe, dual-light all mode. 3 Adjustable Light Intensity Gears Low/Medium/High (L1-L3) customizable strength, max surface temperature up to 140°F (60°C). Warmth generated by LED light energy without separate heating wire. Multi-Timer Auto Shutoff Safety Design Selectable 20/35/45-minute countdown; defaults to 20-minute auto power-off for safe unattended use. 5000mAh Cordless Rechargeable Battery Supports up to 90 minutes continuous wireless use, free of restrictive cords for home, office and travel full-body therapy. Full-Body Wrap with Dual Adjustable Straps 14×7.5-inch main pad matched with short & long elastic straps, tightly fits waist, back, shoulders, arms, abdomen and legs. Clear LED Status Display with Lock Unlock Visible screen shows current mode and intensity; short press power key to release screen lock when locked.