i was hesitant at first to purchase THIS product but I'm glad I did .Based on my experience this 4-way electrical adapter is a lifesaver especially when Im on a long drive and need to charge multiple devices at once. The adapter is easy to install and fits perfectly in my car. The dual output allows me to charge my phone and use my GPS at the same time. The only downside is that the quality is not as durable as I would have liked. Overall, a must-have for any automotive enthusiast..