1. To connect a new device, if there are already connected, hold the power button for 7 seconds. 2. How to connect to a computer. I spent two hours of searching on foreign forums on this, so I just have to share. If you connect headphones to your computer, but they are not displayed in the list of audio devices and no sound is output from them, you need to check the box "Allow Bluetooth devices to discover this computer" in other Bluetooth settings. It's so non-obvious that it's impossible to guess on your own.
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