Headphones ideal for sports. Very few intra découteurs fit in my ears and those there do not move a muscle, even jumping. Very comfortable wearing. The cord behind does not move at all. Pairing Bluetooth and easy connection without cuts. Very good sound quality, but without masking the traffic noise, which is perfect for jogging. Controls very practical and easy to access. Excellent autotomy. Competitive price on Amazon for a Bluetooth product.
In short, a no fault of Plantronics and a pleasure to run with.