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Hi there, Thank you for your inquiry regarding the remote for the Sony BRAVIA 9. The RMF-TX920U remote utilizes a combination of Infrared (IR) and Bluetooth technology to operate the television. Generally, the remote uses Infrared for basic functions, such as the initial power command. Once the remote is paired to the TV, it switches to Bluetooth connectivity for more advanced features. We hope you find this information helpful, and thanks for considering Sony! Best regards, Dominick
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