(R8FG_V2.1 support digital servo, the servo speed is 4ms or 3ms can be selected on RC8X V1.1.5.). 【Superb Fast Response】: High resolution ratio of 4096, stable signal output to provide a fast response for rock crawler, RC truck,tank, buggy, drifting, etc.【Compact Case】: Small size its save space effectively and works well for most of rc car receiver's box.
eBay