the t.bone MB 88U Dual Black, Dynamic Vocal Microphone, With XLR and USB port, Polar pattern: Cardioid, Frequency range: 20 - 16000 Hz, Max. sound pressure level: 137 dB, Impedance: 600 ohms, AD Converter with 16 bit / 48 kHz, No USB driver necessary, For PC and Mac, Dimensions: 182 x 51 mm, Includes USB cable, Matching microphone clamp: Art.#105920# (not included)