The cord is long enough to reach the full length of my suv. Super fast delivery from the seller. I hadn't taken it off my truck since first installing it n it holds.

The claim of being a 72 watt led strobe is a far stretch of the imagination as each led chip would have 2 watt brightness each. However the waterproof quality of the housing is very poor.

It creates a strong suction. It take patience in both wiring the plug and getting the bar in the back window properly. Would be better if it came prewired with an adapter.

The traffic advisor function is a lifesaver for working those middle of the road breakdowns or working against oncoming traffic. The control box has very bright display, which shows you the pattern. The pattern selector is a bit bright too.

When they are single flashing or on a full flash double or quad, it seems that the brightness diminishes by 50%. Power cord to light bar is too short. Here is the sellers response when i inquired about any feel sorry. Its a huge inconvenience.