UPDATED RUNNING LIGHT: Our running light both avant-garde and stylish, it is very easy to wear, if you do not familiar with it, we have wearing details in our scene picture. In front of the product is the white light lamp , red warning behind. Not only can it allow them to see where they are putting their feet, but also avoid obstacles. In addition, the red light behind can warn others too. WITH 3 LIGHTING MODES: 3 light intensity settings (high/low/strobe) for any situation.You can change it by pressing the red button. LATEST RECHARGEABLE BATTERY: Using the latest rechargeable polymer lithium battery which is 1200 MA, it means you will never need to buy batteries for the run lights. The package will come with a USB charger cable, then you can use it to charge in any USB port. It will be fully charged in 5 hours and using time is more than 5 hours in low mode.(no battery) EASY TO WEAR: Our chest running light is equipped with elastic elastic band, adjustable length and easy to wear. You can find out the wearing details from our scene pictures. It would held in the right position when you are running. On the other hand, it is great for someone who love running, jogging, walking, hiking, camping, fishing and so on.