Check the listing for details. ESC Speed Control Programming Update Box Avian & Firma Spektrum V2 SPMXCA200. Condition: New. Listed at 29.99 USD. Product FeaturesReview, adjust and save Spektrum Smart ESC parametersConnect (via USB) to a PC to update Smart ESC firmware and adjust parameters via Spektrum SmartLink PC appCheck a LiPo battery's cell balanceProduct OverviewSet, review, adjust and save the operating parameters of your Avian and Firma electronic speed controls using the Spektrum Smart ESC Programmer. When connected to a PC using the included USB cable, the programmer will update Smart ESC firmware and can adjust parameters through the Spektrum SmartLink app. You can also use it to check the balance of your LiPo battery cells. Needed to CompleteCompatible Spektrum™ Smart ESCPC with internet access What's in the Box?(1) Smart ESC Programmer(1) USB Cable(1) ESC Cable(1) Product Manual