Multi-size Professional Red Light Pad: Four sizes available to meet diverse body coverage demands. Dual Light Spectrum Therapy: Dual-chip LEDs deliver 660nm surface red light and 850nm deep penetrating infrared light for comprehensive relief. Full-body Applicable: Fits back, waist, limbs and more. Adjustable strap enables hands-free use in various postures. Suitable for All Users: Perfect for elders, office workers and people needing daily body relaxation. Easy Control Setting: 4 working modes and 3 power levels. Simple buttons for quick startup and adjustment. Usage Suggestion: 20-minute daily use advised. Thin clothing helps achieve optimal therapeutic effect.