A very cheap pair of BT headphones with slightly "muffled" sound and full of "interference" when played at high volume, but durable, with a "plug" for the charging port and non-slip coating on the part that rests on the neck. The headphones may need to be repositioned in the ear at some point, especially if you're running, as they may have moved slightly. Overall, for the money and the use I wanted to make of them, they are very good. I might have found something better if I had searched more, but I didn't.

The left earphone makes a strange whistling sound.
The battery doesn't last long enough.
Good if you don't want to spend money on expensive wireless earphones

Simply excellent product, the best headphones I've ever had.
They have an ergonomic neckband to prevent them from falling when walking, magnets to hold the headphones together when not in your ears, and the headphones themselves fit into the ears at an angle to fit perfectly and not come out.
Easy Bluetooth connection with the mobile phone, support for accepting and rejecting calls, and volume adjustment buttons.
I charge them with a USB cable directly from the power strip (which has special USB ports) without any problem.