This is a Reventon ESC and dedicated programming card. As shown in the photos, they power on and the programming card operates, but I am not skilled enough to set it up properly. The brushless motor does not synchronize with the radio. I am reluctantly offering this for sale, hoping someone who can set it up will use it. (There is no dedicated instruction manual.) - ESC: Electronic Speed Controller - 1 unit - Dedicated Programming Card - 1 unit Thank you for looking.