Features: Combines red light (660 nm) and near-infrared light (850 nm) for targeted cellular support and pain relief Designed for multi-joint use on knees, ankles, or elbows 270 LED light chips deliver warm, comfortable massaging light therapy Includes four optional vibration massage zones for added relief Wireless wrap provides convenient, portable therapy for pain and inflammation reduction FDA-registered for pain relief and increased blood flow Adjustable strap ensures a secure, customizable fit SPECS: Light wavelengths: 660 nm (red) and 850 nm (near-infrared) in a 1:2 ratio LED configuration: 360 total LED chips (90 sets of 3 chips at 0.5 W each) Light irradiance: 20-40 mW/cm^2 maximum intensity at 0" Optional vibration massage Automatic 20-minute timer Brightness levels: 100% or 50% Battery: 5000 mAh, 3.7 V Li-polymer Size & weight: 26" x 15", 0.3 lbs Material: water-resistant neoprene pad with adjustable strap