Perfect Fitness Dualtech 5-LED Rechageable Saftey Light with Front & Side Illumination Clip-on rechargeable safety light provides increased visibility and safety in low-light conditions 5 ultra-bright LEDs illuminate both the front and sides with two modes of light: continuous or flashing Safety light is rechargeable through a USB port with up to 10 hours of continues burn time Spring-loaded clip attached firmly to clothing or equipment for use walking, running or biking Dimensions: 6 inches x 1.25 inches x 2.5 inches; 04 pounds