588SD Shure Unidirectional Dynamic Microphone.
Ball-type. Dual HI Z & LO Z Impedance. Spherical grille is a very effective wind and pop filtering, ideal for closeup vocal miking. Symmetrical cardioid pickup pattern minimizes feedback. Lockable On-Off switch. Frequency response 80 - 15KHz. 3 pin XLR connector. Swivel adapter. 3 lbs sh. Unused in the original box,