Electric Heating Acupoint Pen Microfrequency Vibration Dual Head Pulse Reduce Pain Meridians Massage Pen Item Type: Electric Acupoint Massage Pen Vibration Level: 3 levels Temperature: 3 speeds Micro Electric Gear: 9 gears Battery Type: Lithium battery Battery Capacity: 1000mAh (Built in) Power Supply: USB charging How e: 1. Power On/Off and Vibration Massage Button: Press and hold the power button to turn the device on or off. Press the button briefly to adjust the vibration mode: low strength, high strength, intelligent mode, or stop the vibration cycle. 2. Temperature Button: The default setting upon power on is left side temperature 1 (low) and right side temperature 1 (low). Each brief press of the temperature button adjusts the temperature setting as follows: left side temperature 1, right side temperature 0; left side temperature 2, right side temperature 0; left side temperature 3, right side temperature 0; left side temperature 0, right side temperature 1; left side temperature 0, right side temperature 2; left side temperature 0, right side temperature 3; left side temperature 0, right side temperature 0; left side temperature 1, right side temperature 0. In simple terms, upon power on, both left and right sides are set to low temperature. Each press of the temperature button adjusts the temperature setting for the meridian massage head and scraping head: low, medium, high (indicated by green, blue, red lights for meridian head and by green, blue, red lights for scraping head) in a cyclic manner. 3. Microcurrent Button: Press the button briefly to adjust the microcurrent strength, ranging from 0 to 9 levels. Note: The default setting upon power on is level 0 (no microcurrent output). 4. Charging: When the battery is low, the digital display will show three dashes and blink before automatically shutting down. During charging, the digital display will dynamically blink with three dashes, and when fully charged, it will display three dashes continuously. 5. Timer: The device will automatically shut down after 30 minutes, with the bottom right dot on the digital display blinking to indicate the remaining time. 6. Protection Functions: a. In case of temperature probe abnormality, the digital display will blink and the device will shut down automatically. b. When charging, the device cannot be turned on and operated. Note: Upon power on, the default settings are low temperature for both the meridian massage head and the scraping head, indicated by green lights. The vibration strength is set to 0 (no vibration output), and the microcurrent level is set to 0 (no microcurrent output). Note: The default setting upon power on is low temperature for both the meridian head (indicated by "L" on the display) and the scraping head (indicated by "R" on the display), indicated by green lights. The temperature settings range from 0 (off) to 3 (high). Note: The device cannot be turned on for use while charging. Disconnect the power source before powering on. (Before use, apply massage oil and massage for 1-3 minutes before using the device for massage or scraping.)