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.
🎧 Huawei FreeBuds Pro Earbuds with Advanced Noise Cancellation, Bluetooth 5.2, and 3-Mic System for iOS and Android (Carbon Black)
295 Review
Headphones Sennheiser CX 300-II, black
318 Review
Upgrade Your Music Experience with XiaoMi True Wireless Earphones 2 Basic - Longer Battery Life and Superior Sound Quality (White, International Edition)
341 Review
Huawei Freebuds Pro MermaidTWS with Active Noise Cancellation - Silver Frost
299 Review
New White Marshall Minor II In-Ear Bluetooth Headphone
101 Review
Panasonic RP-HS46 Slim Clip-Type Earphones in White: Quality Sound On-the-Go
76 Review
Sony MDR-ZX310AP ZX Series Blue Wired On Ear Headphones with Mic: Immersive Sound Experience
48 Review
Bose QuietComfort 25 Acoustic Noise Cancelling Headphones with 3.5mm Wired Connection for Apple Devices - Black
43 Review