We believe this is the most powerful, durable, and flexible rapid car charger available today for the Nextbook Premium7 Tablet. In the rapidly commoditized vehicle charger market where manufacturers all compete for the lowest price offering, Gomadic stands alone. We have integrated the latest in advanced charging circuitry using only high quality components, miniaturized it to fit on a circuit the size of a dime, and then backed it with a lifetime warranty, to produce a charger without compare. Built to outlast the Nextbook Premium7 Tablet that it will charge, Gomadic TipExchange Technology was added to ensure that the charger can be easily upgraded when your device is. The Nextbook Premium7 Tablet is a quality product that deserves to be protected by a quality charger!