Using the NiteRider Vmax+ 150 taillight is a breeze. First, charge it using the USB - C port until it's fully charged. To turn it on, just press the button. You can cycle through the 6 different modes by pressing the button again. You can attach it to straps, belt loops or other suitable places on your clothing for maximum visibility. When using it, avoid exposing it to extremely high temperatures or strong impacts. To maintain it, keep it clean by gently wiping it with a soft cloth. If it gets wet, dry it thoroughly. It's IP64 rated, so it can handle some water and dust, but try not to submerge it in water.