This is an Airtronics M12 2.4GHz FH4T 4-Channel Competition Pistol Grip Radio with RX-471 FH4 Super Response Receiver. The M12 is newly-equipped with a 4x higher spec CPU compared to our world champion model, the industry-leading M11X. Brand new from the ground-up, the M12 is the realization of lofty goals to more than double its analysis ablility and speed.