Specifications:Color: Black/BlueWavelength: 660nm (red light) / 850nm (near-infrared light)Number of Lamp Beads: 105 pcsPower: 16WInput Voltage: 100-240VPower Bank Support: YesKey Features:1. Hot Therapy for Pain Relief:The built-in heat therapy pad warms the lower back and abdomen, promoting blood circulation and alleviating pain.Ideal for relieving menstrual pain, sedentary lumbago, lumbar muscle strain, stiffness, and arthritis.Suitable for women, the elderly, office workers, long-distance drivers, and others prone to these conditions.2. Universal Fit:The adjustable belt fits waist sizes from 29 to 49 inches.Lightweight and portable, allowing red light treatment to be applied to any part of the body at any time.3. Easy Button Control & Adjustable Heat Settings:Simple operation with a long press (3 seconds) to turn on/off.Power button with LED indicator for easy heat setting adjustment:Red (High): 65C/149F to 75C/167FBlue (Medium): 55C/131F to 65C/149FGreen (Low): 40C/104F to 60C/140FShort press to switch between heat settings.4. Enhanced Fat Burning:Designed to retain optimal body temperature in the abdominal area, assisting in fat loss and calorie burning during exercise.For best results, use the red light therapy belt after exercise, as experiments show it enhances fat burning compared to not using red light.