The tiny Eiger is packed with all the features you need, and is easier to use and more adjustable than any ESC in its class. Tuning on the rocks is as easy as 1-2-3. No programmers or wires to fuss with! With four on-board adjustments, the Eiger can be customized to suit any type of crawling. Two models available: Eiger (#1835), and the pro-version, Eiger Pro (#1836). The Eiger Pro sports superior transistors for unmatched on-the-rock performance. If you require the best and fastest on the rocks, the Eiger Pro can handle a 20-turn brushed motor on 3S with no problem!