Gain greater control of your training regimen with the 20-Function Wireless Remote Control. The state-of-the-art compact controller allows you to make instantaneous changes to functions like: play/pause, oscillation sweep, fully random, 2-line, speed, feed, spin, and much more. This option may be pre-installed by the factory or by the owner after purchase. This remote can only be used on the Lobster Elite Grand IV, Grand V and Grand V LE. Lobster Tennis Equipment EL21