These are ambie Bluetooth earphones. I've had them for quite a while, and the connection is unstable, and they often won't charge. They've been stored for a long time, so they're a bit yellowed. These are ambie Bluetooth earphones. I haven't used them in a long time, and the connection is unstable, and they're difficult to charge. Sometimes there's sound, and sometimes there isn't. They've been stored for a long time, so they're a bit yellowed.