Reedy Blackbox 850R Competition 1/8 Brushless ESC w/PROgrammer 2

The Reedy Blackbox 850R Competition 1/8 Brushless ESC with PROgrammer 2 is track-tested and competition proven. This versatile and powerful ESC is capable of winning at the highest levels of competition. A wide range of precision adjustability, excellent throttle and brake feel, and durable high-quality hardware make the Blackbox 850R perfectly suited for 1:8 Buggy and Truggy applications.The 850R comes pre-programmed with settings that are suitable for most applications and track conditions. But by utilizing the Blackbox PROgrammer2, the full potential of the 850R can be exploited. In addition to working as an ESC programmer, it functions as a battery monitor and USB firmware update device. The Blackbox Programmer2 is compatible with the standard firmware installed in your 850R ESC as well as the standard firmware installed in the 510R ESC. If you have purchased your Programmer2 separately, or plan to use one that originally came with a 510R ESC, please confirm that firmware version E