The following is a detailed description of the Pet Red Light Therapy Calf Pad (660nm and 850nm Dual Wavelength), designed to alleviate joint and muscle pain:

Product Name 
Pet Red Light Therapy Calf Pad (660nm + 850nm Dual Wavelength LED Therapy Device)
Core Function
- Non-pharmacological pain relief: Utilises specific wavelengths of red light (660nm) and near-infrared light (850nm) to penetrate the skin, promoting cellular energy (ATP) synthesis, thereby alleviating joint inflammation, muscle pain, and post-surgical recovery in pets. 
- Dual-wavelength synergistic effect:
- 660nm (red light): Targets superficial tissues (skin, muscles) to reduce inflammation and accelerate wound healing.  
  - 850nm (near-infrared light): Penetrates deep into joints and bones to improve blood circulation and reduce stiffness and swelling. 
- Safe and non-invasive: Pain-free with no side effects, suitable for long-term management of chronic conditions (e.g., arthritis, hip dysplasia) or sports injuries.

Application Scenarios
- Joint degenerative diseases in elderly pets (dogs/cats), such as osteoarthritis.  
- Post-surgery recovery (e.g., ligament surgery, fracture rehabilitation). 
- Relief of muscle strains, sprains, or post-exercise fatigue. 
- Chronic pain management (in conjunction with veterinary treatment plans).
Product Features  
1. Scientifically proportioned light sources: LED light beads are arranged in optimal proportions to ensure uniform light coverage of the affected area.  
2. Portable design: lightweight, foldable pad that conforms to the contours of the pet's legs or joints, with a securing strap.  
3. Smart timer: automatic shut-off function (recommended usage: 10–15 minutes per session, 1–2 times daily).  
4. Safety certification: compliant with pet medical device standards, free from UV/harmful radiation.  

Usage instructions 
1. Wrap the therapy pad around the pet's painful area (e.g., knees, hips, or shoulders).  
2. Turn on the power and select the wavelength mode (dual modes can run simultaneously).  
3. The pet can move freely during treatment without sedation.  
4. Treatment duration: Continuous use for 2-4 weeks may show significant improvement (individual results may vary depending on the condition).  

Technical Specifications
- Wavelength: 660nm (red light) + 850nm (near-infrared light) 
- Power: Low-power medical-grade LED (<5W) 
- Power supply: USB charging or battery-powered 

Note: Red light therapy is an adjunctive treatment and cannot replace veterinary diagnosis. It is recommended to consult a professional veterinarian before first use to develop a personalised rehabilitation plan.