No tools needed, easily installed and ready to get to work in minutes! This portable 14.5" tall universal seat mount sits a bit higher than the RAM-SM1-234-3 and it also comes in it's own carry case. The seat-mate actively holds onto the seat and stabilizes for a mobile work station anywhere you need it. Integrated rubber ball and socket system will keep your device at the viewing angle you need and you can set the typing angle in the best position for you. When you need your front seat, you can easily fold, stow and go! This model comes with the Tough-Tray™ accommodating up to a 17" screen laptop.