Rather nice product with a few defects
Compactness, lightness and sound quality make this a good product for basic use.
Advanced settings are available, but you have to use a Samsung app that I don't have.
One trap I fell into: to pair, you MUST leave the headphones in the case (perhaps I didn't read the documentation properly).
However, I didn't manage to connect it to an Asus A007. Too old? With my computers, Windows or Linux, no problem.
Negative point: when I put the earphone straight in my ear, I get a rather unpleasant whistling sound, like feedback. Fortunately, it's fairly short-lived.
Battery life: I was able to hold a three-hour conversation on the phone, which is less than the advertised battery life. However, 5 minutes of recharging gives enough battery life for another hour's use.