"This product is ""new-open box"" - the box was opened, the product was not used, tested for proper operation and is in a perfect working condition. In an original box. Shure SM58 Legendary Vocal Microphone* The Shure SM58 unidirectional (cardioid) dynamic vocal microphone is designed for professional vocal use in live performance, sound reinforcement, and studio recording. It has a tailored vocal response for a sound which is a world standard for singing or speech. A highly effective, built-in spherical filter minimizes wind and breath ""pop"" noise. A cardioid pickup pattern isolates the main sound source while minimizing unwanted background noise. Rugged construction, a proven shock-mount system, and a steel mesh grille ensure that even with rough handling, the SM58 will perform consistently, outdoors or indoors. Features Frequency response tailored for vocals, with brightened midrange and bass rolloff Uniform cardioid pickup pattern isolates the main sound source and minimizes background noise Pneumatic shock-mount system cuts down handling noise Effective, built-in spherical wind and pop filter Supplied with break-resistant stand adapter which rotates 180 degrees Legendary Shure quality, ruggedness and reliability Cardioid (unidirectional) dynamic Frequency response: 50 to 15,000 Hz Replacement cartridge: R59 * Cable not included Specifications Type - Dynamic (moving coil) Frequency Response - 50 to 15,000 Hz Polar Pattern - Unidirectional (cardioid), rotationally symmetrical about microphone axis, uniform with frequency Sensitivity (at 1,000 Hz Open Circuit Voltage) / -54.5 dBV/Pa (1.85 mV) / 1 Pa = 94 dB SPL Impedance - Rated impedance is 150 ohms (300 ohms actual) for connection to microphone inputs rated low impedance Polarity - Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3 Connector - Three-pin professional audio connector (male XLR type) Case - Dark gray, enamel-painted, die cast metal; matte-finished, silver, spherical steel mesh grille Net Weight - 298 grams (10.5 oz)"