Unfortunately some latency when connected with the iPad or slight asynchrony in films schauen.Jedoch not on Mac or PC. Fits perfectly on the head for a longer time without drücken.Musikwiedergabe is amazing neutral for headphones in this price range. Playing in the same performance class as 3-4x more expensive products from AKG, Sennheiser etc.Dank Bluetooth 4.0 very quick pairing with the respective BT 4.0 device. NFC I did not getestet.Gute processing, robust connection cable to the Ohrhörern.Sogar the Uhrpolster favorable ordered as spare parts. Can recommend buying only warmest.