This is the Sanwa/Airtronics MX-6 FH-E 3-Channel 2.4GHz Radio System, the perfect solution for the new user. The MX-6 features an upgrade to the new communication system, FH-E. FH-E is a better communication system than the old system FHSS-2. Also, the MX-6 is 290 grams without the battery. It is 40 grams lighter than the old MX-V. The lighter weight gives easier holding for racers.