The Dual Vehicle Outlet Splitter will allow you to power your smartphone in addition to an accessory at the same time in your car.. Just plug the power adapter into your power socket and it's ready. This is especially useful if you have multiple cell phones in your car or if you want to power another electronic device while your cell phone is charger. Conveniently extends your vehicle cigarette power source close to your equipment. Especially for hard-to-reach cigarette 12-volt power source.