With data line, battery capacity 150 mA, charging 2 hours, available 6-7 hours, adjustable length, with climbing buckle design, with reflective strip, size: 80 * 5cmBrighter and safer: front and rear light strips and reflective strips can provide 360 reflection and visibility to make you stand out in the dark. A must for anyone who likes to walk, run or cycle in the dark.USB rechargeable: no battery change, no frequent charging. There are 3 modes: slow flash, fast flashing and stable.Easy and comfortable: very easy to put on and take off, simply pull over the head and one arm. As it folds very small and compact, it is perfect for taking with you. Protect yourself anytime and anywhere.Universal fit: thanks to its highly elastic and adjustable design, our reflective running clothing is suitable for different people sizes, no matter how thick jacket or coat you wear in winter, you can easily put them on.