Description Battery model: AA battery*2, you need to prepare it yourself. Color:as the picture shown Features: 1. Utilizes advanced rechargeable transcutaneous electrical nerve stimulation technology to effectively relieve muscle soreness and fatigue, and promote rapid recovery after exercise. 2. Lightweight and portable design, built-in long-lasting lithium battery, and USB fast charging support, allowing you to enjoy professional-grade muscle relaxation anytime, anywhere. 3. Multiple modes and intensity levels are adjustable to meet various needs, including pain relief, massage, and exercise. Suitable for all areas of the body, including the neck, back, and limbs. 4. Equipped with high-quality conductive silicone patches, it is skin-friendly, and provides stable conduction. It can be used repeatedly, and a spare gel patch is included for even longer-lasting and effective use. 5. Wireless remote control and smart app control (if supported) allow for easy visual control of the care process, ensuring simple and safe operation. Storage method: Store in a cool and dry place, avoid sunlight. Notes: 1. The manual measurement tolerance is 2-5. Please don't mind your replacement. 2. Due to the difference between different monitors, the image may not reflect the actual color of the item. Thank you very much! 3. The effect varies from person to person, it is recommended to persist in use. Package includes: Meridian Massager*1