AIDITIYMI RMF-TX310U RMFTX310U Replaced Voice Remote Control with Mic work for Sony 4K Smart Bravia TV Firstly install 2 new 1.5V AAA alkaline batteries, then pair it with your TV, then it works. This is a replacement Voice remote controller. Compatible with Sony TV Models: Bravia XBR-43X800G XBR-75X800G XBR-65X800G XBR-49X800G XBR-55X800G Bravia XBR-85X900F XBR-49X900F XBR-75X900F XBR-65X900F XBR-55X900F Bravia XBR-55A8G XBR-55X850F XBR-60X830F XBR-65A8G XBR-65X850F XBR-70X830F Bravia XBR-49X850F XBR-75X850F XBR-85X800G XBR-85X850F XBR-85X855F KD-55X751F KD-55X755F KD-55X757F KD-65X750F/A KD-65X755F KD-65X757F KD-75X780F KD-55X750F KD-65X750F KD-43X750F KD-49X750F Package Content: 1 x Remote Control (Batteries are Not Included).