Sufficient quantity: you will get 2 pieces LED safety lights and 2 pieces batteries are included for each light and 2 pieces extended adjustable straps; Sufficient quantity and nice combination can meet your needs and simplify installation Reliable material: made of ABS plastic and quality LED light, these strobe lights are safe and durable, can be applied with your confidence; Besides, walk light feature with nice weather resistant and water resistance, can be applied on rain or shine, summer or winter any weather condition; Moreover, the bright is enough to make people pay attention, keeping you safe and secure Wide application: these running lights are designed with a waterproof case, allowing them can be attached or clamped onto belts, pockets, backpacks, anywhere on your clothes; They also can be mounted on pet collars, backpacks, helmets and jogging or walking gear Easy to carry: without any tool, strobe running lights are easy to use, install,connect and fasten; Size of a car key and weigh less than one ounce, making them convenient to carry and store 3 Modes of switches: clip lights for running support 3 practical lighting modes, such as full bright, fast flash and slow flash modes; Just press a button, you can perform real-time lighting; All 3 modes can help or warn other passengers, drivers, and pedestrians to find you in the dark or in total