Designed to stand up to the K-12 environment, Smart-Trek headphones are built to last.
FeaturesChew-resistant, PVC-jacketed, braided nylonUSB plugCompatiblePCs and MacsCD Players, Stereos, TVsMost Gaming SystemsSpecificationsDrivers: 40 mmImpedance: 32Frequency Response: 50Hz - 20KHzSensitivity: 105dB ± 4dBCord: 5' Dura - CordWarranty: 1 YearDimensions: 7 x 5 x 3 in. Smart-Trek feature a rugged and comfortable design, so teachers can have headphones that will function for years, and students can wear the headphones for an extended period of time.65 lbs Hamilton Buhl ST1BKU Smart-Trek Deluxe Stereo Headphone with In-Line Volume Control & USB Plug Its adjustable headband snaps easily into place to fit students of all ages.