Thank you for viewing! These are likely top-of-the-line earphones, but I accidentally bought two during a time sale. I'm selling them because they charge very quickly and I have no need for a second pair. Feel free to ask about price reductions! Bluetooth 5.4 compatible. Recommended for falling asleep! These are very secure, lightweight, and painless inner-ear wireless earphones. You might be surprised by the sound quality of the startup voice test, but in a bad way, however, it doesn't interfere with the sound quality of videos, games, or music. Please rest assured. - Bluetooth version: 5.4 - Compatible devices: iOS/Android/Windows