Key Specs of Backfire Tail lights: BRAKE SENSE: When the brake is sensed, the smart tail light automatically switches to the brake light mode. Cause the attention of the rear vehicle, IMPROVE SAFETY BRIGHTNESS: 180-Degree field of view width. It's super bright especially you brake and in dim to no light conditions for anyone to see your rear all clearly visible for night no matter rain or fog AUTO ON/OFF: An intelligent sensor provide AUTO ON/OFF for the tail light.20+hours run time, even you needn’t to charge it within one week, never worried about running out of power, ENJOY THE FUN OF RIDING IPX6 WATERPROOF: IPx6 waterproof and dust-proof, water spray from any direction will not enter the light. AUTOMATICALLY START AND STOP : With a intelligent sensor, the tail light will turn on automatically riding in low brightness and turn off automatically riding in high brightness. Also the tail light will turn on when braking.   This Spoiler is designed to work with Backfire Hammer / Sledge, Ranger X3, Ranger X2 the best; & other brands' off road boards.  It also fits other models by Backfire, but you might find it a little bit too wide to sit on top of street boards.  The spoiler has its specially designed bracket for the lights together.  You can not use the spoiler brackets to install the lights on the deck directly. Please check the other tail light set we offer for the street boards with a different bracket design.