They connect at once, without problems, after which they connect instantly, at least in a pair, at least one at a time. Good microphone, no one complained about the sound. Upset the sound quality of the music, there is "meat" of the sound, but the tops are not sonorous, and the basses are somehow flat. At the same time, I took HTC True Wireless Earbuds, which are almost 2 times cheaper, in which the sound quality is much better, without flaws in everything else (only sensors instead of buttons), and there is also moisture protection. This is a personal opinion based on subjective feelings, not advertising, just a comparison.
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