1PC S530 Mini Invisible Ultra Small BT 5.0 Stereo Earbud In-Ear Headset with Microphone Support Hands-Free for Smartphones Perfect for Listening to Music at Work
Received and tried that it was working. The charging time was short but service time was about two hours continuous use time only, the the 4 hours stipulated in the manual. However output was just audible with maximum volume level.