RED LIGHT HEATING PADS: Using high-performance LED beads, 660nm and 850nm red light, the red light heating pads can reach up to 26 milliwatts per square millimeter, which ensures that the red light can work better to improve the massage effect, effectively relieve fatigue, soothe and relax the body. QUIET VIBRATION: The red light heating pad is equipped with 2 motors with 3 vibration intensities to choose from. The silent motor design, 30-45 dB low noise, ensures that you will not be disturbed by noise during the massage, so that you can enjoy a quiet massage at any time. 4 RED LIGHT MODES, 3 KINDS OF BRIGHTNESS: There are 4 red light modes, 660, 850, F10, ALL, corresponding to only 660nm, only 850nm (850nm is invisible), 660nm/850nm flashes at a frequency of 10H, 660nm and 850nm light up together. When the red light mode is on, there are 3 kinds of brightness choices, the screen displays L1, L2, L3, you can choose the right mode and brightness according to your needs. When the red light mode is turned on, there are 3 kinds of brightness choices, the screen displays L1, L2, L3, you can choose the right mode and brightness according to your needs. TIMING FUNCTION AND LONG LIFE: The infrared light pad has 3 timing functions: 15 /30 /45 minutes, you can adjust the time setting according to your needs. If you do not set the time, the device will automatically time for 15 minutes. 5000MA high-capacity battery, only one massage can be used for about 14 hours.