This is one of those car or truck accessories you are going to want to use all the time. Power your 12v lunchbox and charge your phone at the same time. This 12v adapter powers and charges devices simultaneously and has three 12-volt sockets with caps. Great multipurpose power source for on the road. Made of heavy-duty 18-gauge copper wire it also has a heavy-duty strain relief. (Do not exceed 10 Amps maximum capacity for all devices.) The three 12-volt sockets come with caps to protect them from dirt and debris while not in use. The protective caps are also water resistant. This is a 3-way adapter that makes a great truck accessory to have on hand. A travel accessory for camping trips and more. This car cigarette lighter adapter is just one convenient way to convert DC to AC. Look to RoadPro for everything you need for your on-the-go lifestyle. Another product to bring you comfort and convenience while you are traveling away from home