3.5 universal fully compatible with all phones contracted appearance design,fashion model deft in-ear headphones, materials,not easily broken horn, sound assurance comfy experience model: k-28 color: black,white,green,pink wearing type : in-ear function: mp3 player,mp4 player,a mobile phone connectivity : wired connecting interface: 3.5mm application: computer,portable media player,dj plug type: full-sized frequency response: 18~20khz impedance: 32ohms sensitivity: 116+3db package weight: 0.04 kg product size (L x W x H): 125.00 x 1.800 x 1.00cm / 49.21 x 0.71 x 0.39 inches package contents: 1 x headset.