Spektrum AR7200BX DSMX Flybarless Control System SPMAR7200BX This is the Spektrum AR7200BX 7-Channel DSMX Flybarless Control System.Features:250- to 800-size helicopters DSMX safety and control Flight log telemetry-compatible 2048 resolution Integrated BeastX 3-axis MEMS gyro Easy-access design for field adjustments 11ms frame rateBeastX flybarless technology is the easiest-to-use, most powerful flybarless technology thats available. Now that technology has been combined with