4 Light Changing Modes: With up to 150 lumens of light, this outdoor night running light is designed with 5 different lighting modes, high, medium (50%), low (30%) and red flashing, suitable for Depending on the situation, you can easily switch the lighting mode with a click of a button USB rechargeable: The running light does not need to replace the battery. Take off the cover at the clip, the exposed USB plug chip can be adapted to most USB interfaces. When plugged into the port, the red light indicates that it is charging. If fully charged, the green light will be on. Warm Tips: Please pay attention to the direction when inserting. When plugging in the interface, adjust to the correct plug-in method that the product can light up. Safety design: reflective usb rechargeable running light is bright enough to illuminate yourself and the surrounding road when jogging at night, so that others can see it hundreds of meters away You, reduce the frequency of accidents and make nighttime outdoor sports easier Reliable and easy to repair: Our outdoor night running gear is made of high-quality ABS plastic and measures approx. 7 x 4 x 2 cm/ 2.7 x 1.6 x 0.8 inches, lightweight and compact, can run for about 3-4 hours after fully charged, suitable for most weathers and seasons. Mudder provides professional customer service, if you encounter any problems after receiving our products, please contact us via buyer-seller message, we will always help you