Have already tested several Bluetooth headsets and I must say this headset is so far as been best. Price-performance top. The workmanship is very good but simple, however, can not diminish or somewhere enter water. The sound is good, however, the headphones could sit a little deeper in the ear. The headset strap holds but wonderful with me. Very good is so far the battery power !!! Once charged and played 4 hours of music and still no sign of Müdigkeit.Laut manufacturer up to 7 hours. I'll make a repost when my headset is empty! I would recommend this product without any problems!