Specifications: Type: Physical Therapy Laser 808nm Laser for Sciatica Pain Relief Deep Tissue Pain Relief Material: Aluminum Alloy ABS Voltage: 5V Output Power: 520mW Power Adjustment: 5 Grade for Adjustment Display: LCD Display Battery Capacity: 2400mAh Laser Wavelength: 808nm 10nm and 650nm 10nm Lamp Beads: 17PCS Laser Output Terminal Features: 1. Upgraded Design with Red Light Therapy 14st x 650nm and 3st x 808nm More lights have been added to enhance usage efficiency. Customize your own mode with 5/10/15/20-minute timer and energy levels for L1/L2/L3/L4. Press and hold button to activate. NOTE: The three beams of 808nm are invisible. 2. Optimal Choice for Wellness 660nm and 808nm handheld red light therapy for the body. 660nm red light can be absorbed by the skin to promote blood circulation; 808nm near-infrared light can penetrate deeper to relieve joint and muscle pain. 3. Accelerates Performance and Recovery After Injury We recommend using 2-3 times daily for 20 minutes to relieve knee, shoulder, back joint, muscle pain, arthritis pain, and make it easier for you to recover from a sprain or severe injury. 4. Helps and Cares for Your Pets Infrared light therapy device helps reduce pain and skin issues in your pets. Provide your pets with the quality of life they deserve using the same reliable device you use yourself. Suitable for professional personal and pet use such as cats, dogs, horses, and more. 5. Ergonomic Design With a streamlined design and extremely lightweight weight of 0.48 lbs, this pain relief therapy device is safe and portable whether you're at home or traveling.