If you purchase a Roku remote with headphone jack, note that the built-in headphone amplifier drains batteries in a hurry, and it is activated whenever you have phones plugged into the jack. Be sure to unplug them when not in use.
You can also use the Roku app on a mobile phone or tablet (must be connected to your home wifi network) to listen remotely, without draining your remote's batteries.
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Streaming Stick 4K+ 3821 | Streaming Stick+ 3810 | TCL Roku TV 43S245/C107X