Wired Microphone Headset Teacher Tour Guide Performance 3.5mm Dual Hook Head MIC Specifications: With nylon weaving wire, suitable for your daily use. Soft covered microphone, comfortable to wear. High class microphone, clear voice output, no howling. With 3.5mm jack, suitable for most amplifier. Connect this microphone to an amplifier or a PC. Dual hook design, closely fit the ears. Mini size, lightweight design, easy and convenient to carry. Item Name: 3.5mm Wired Microphone Frequency Response: 50Hz - 20KHz Impedance: 680ohm Jack: 3.5mm Jack Sensitivity: -42dB ± 1.5dB String Diameter: 2mm/0.08" (Approx.) Features: Durable, Easy to Use, Portable, Useful String Length: 1.2m/47.2" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x 3.5mm Wired Microphone