SKMEI LED Running Belt Keeping You Visible & Safe, Best Running Waist Pack Fits Keys, Phone (Iphone 6, Galaxy S4, S3, Smartphones) and Valuables Safety Lights: 3-mode-LED light increases visibility and your safety outdoors. Be easily noticed by vehicles in the dark and reduce chances of accidents. Spacious Pocket: The lightweight belt with expandable and secure pocket perfectly fits smartphones, cash, credit cards, keys, energy bars or gels. Adjustable: Clever buckle adjustment combined with a slightly stretchy material ensures fits waist sizes from 22 to 44 inches.Strong elastic waistband prevents bouncing.: Two batteries(CR2032) are included. You just only need to launch the small round battery container when replaceing the batteries. Batteries: Two batteries(CR2032) are included. You just only need to launch the small round battery container when replaceing the batteries. Uses: perfect for running, cycling, hiking, training, biking, outdoor activities. Multi-function and safe equipment for outdoor activities.