Feature: Active noise cancelling earbuds,cheap ear buds for kids/ women/men. Pack of 100 earbuds headphone. Individually package for each earbuds. Connectors:3.5mm audio jack Communication:Wired Style:In-Ear Use:Mobile Phone/PAD/MAC/PC/MP3 Equipment.Cable Length:1.8M Specation: Impedance: 32 OHM Maximum Power Input: 5 mW Sensitivity: 115db (front), 102db Frequency Response: 20 Hz to 20KHz Connector: 3.5mm diameter mono plug. Compatible with most smartphones,class set of headphones for students,and other devices,it’s for iPhones/iPads/iPods/Mac/PC/Andriod/Fitness&Audio Equipment. Fits comfortable in your pocket, purse or backpack. Excellent sound quality in all ranges.