Yamaha WA163900 REMOTE CONTROL RAV244 THE SONY WA163900 (RM-MZE) REMOTE CONTROL ALLOWS EASY OPERATION FOR YOUR COMPATIBLE SONY MODEL. THE SONY WA163900 IS PERFECT IF YOU LOSE THE ONE THAT WAS INCLUDED WITH YOUR UNIT OR IF YOU'RE IN NEED OF AN ADDITIONAL REMOTE. THE WA163900 CONTROLS ALL BASIC FUNCTIONS OF THE UNIT. BATTERIES SOLD Works with the following models: Yamaha DSP-AX640, Yamaha HTR5660, Yamaha HTR-5660 (RAV244) Yamaha RXV640, Yamaha RX-V640 (RAV244), Yamaha RX-V640RDS