The Sanwa MX-6 works with the Sanwa FH-E 2.4GHz technology. It can be operated with the Sanwa RX-391W. SANWA New Transmitter #34;MX-6 #34; for Entry Class!! MX-6 upgrades to New Communication System #34;FH-E. #34; FH-E is better communication system than old system FHSS-2. Also, MX-6 is 290 grams without battery. It is 40 grams lighter than old model MX-V. The lighter weight give easier holding for racers. • Model Naming • Anti-Lock (ABS) Braking • Exponential • End Point Adjustment • Servo Reversing • Steering Dual Rate • Servo Sub-Trim • Battery Voltage Monitor • 10 Model Memory • 4 Cell Dry Cell Batter