Philips invention SHP1900 is a good headphone, its 20-20, 000Hz frequency range give amazing experience listening song, watching videos, play game.it’s ear cover system don’t fill hard, it’s so soft and it Full size ear shells block get away you from external noise.lightweight of Philips SHP1900 that you feel hardly.it’s wired-3.5mm single pin that can use any other sound system. over all with Philips SHP1900 you not only get amazing sound but also many other extra facility in zast very low price.