4 Lighting Modes: This outdoor night clip on running lights has up to 150 lumens of light and is designed in 4 different lighting modes, respectively high, medium (50%), low (30%) and flashing red for different situations, you can easily switch lighting modes with one click USB Rechargeable: The lights do not need to replace the battery; Remove the clip cover, the exposed USB plug chip can fit most USB interfaces; When inserting the interface, the red light indicates that it is charging; If it is fully charged, the green light will be on; Reminder: Please pay attention to the direction when inserting; When inserting the interface, adjust the correct insertion mode so that the product can light up Safety design for night walking: the reflective USB rechargeable running light is bright enough to illuminate you and the road around you while you are jogging at night, so that others can see you hundreds of meters away, reducing the occurrence of accidents and making it easier to exercise outdoors at night Detailed size: you will receive 2 pieces of outdoor night running gear, made of quality ABS plastic, measuring approx. 7 x 4 x 2 cm/ 2.7 x 1.6 x 0.8 inches, lightweight and compact, can work for about 3-4 hours on a full charge, suitable for most weather conditions and seasons Where to use: the reflective USB rechargeable running light can be clipped on hats, belts, collars, pockets, backpacks, dog collars, etc., so you don't have to hold it in your hands, reducing the burden of running, jogging, climbing, camping, outdoor activities, convenient to use