1. Go to watch OS App Store on your Apple Watch. 2. Search for Watch Tube. Select the relevant suggestion. Read about the app if you want. 3. Install Watch Tube.
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YouTube On Apple Watch
4. The homescreen of the app will present trending videos. You can watch any of those suggested videos or search any video and play it.
You can listen to the videos over headphones or built-in speakers of the Apple Watch. The app also offers captions and the option to share videos to other phones