This night running led light has 7 lighting modes and 7 color changes, so it can meet your different needs. Designed with high brightness for safe walking or running at night, it's a must-have for any runner. The adjustable elastic band design brings more convenience for you to put on and take off this ultra-light and ultra-bright night running led light vest, and enjoy the endless fun brought by night running. It is made of high quality abs material which is very durable. The waist circumference of this product is 72-100cm. This product is great for outdoors, camping, running, walking and more. LED: 3WXPE*1+ RGB SMD*4 Battery: Built-in 1500mAh 103040 Polymer Lithium Battery Battery Life: 4-8 hours Brightness: 120LM Material: ABS Color: Sky Blue, Dark Blue, Fluorescent Green(optional) Package Size: 10 x 34 x 43cm Weight: 400g Package List: 1 x Night Running Light