Disposable Earbuds AE-215 Stereo Rubber Tip Bulk Earbuds 25 Pack Set of 25 AE-215 black earbuds These high-quality disposable bulk earbuds have silicon tips to reduce ambient noise Packed in individual plastic bags and ideal for gyms, fitness centers, class labs, hotels, school testing, classroom listening exercises, giveaways, and more 3' 10" cord and 3.5mm stereo plug Speaker element type: ferrite | Impedance: 32 Ohms | Frequency: 158 Hz | Harmonic distortion: 100 Hz