Awesome mic, just need to trim down my selection. Babied in a home-studio environment, and includes original packaging.

From Shure:

The SM7dB is a cardioid dynamic microphone with a Shure-designed built-in preamp. This preamp provides up to +28 dB of low-noise, flat, transparent gain - ideal for lower-output interfaces and simplified audio chains. Delivers warm and smooth audio for vocal and studio applications. Preamp bypass switch, adjustable bass roll-off and presence boost, electromagnetic hum shielding, internal shock mounting, and external windscreen ensure clear and consistent audio reproduction.

Features• Built-in active preamp providing either +18dB or +28dB of extra gain delivers levels suitable for any interface
• Flat, wide-range frequency response for exceptionally clean and natural reproduction of both music and speech
• Preamp bypass switch to revert to original SM7B performance
• Bass roll-off and mid-range emphasis (presence boost) EQ switch controls
• Superior rejection of electromagnetic hum, optimized for shielding against broadband interference emitted by computer monitors
• Internal "air suspension" shock isolation virtually eliminates mechanical noise transmission
• Highly effective pop filter eliminates need for any add-on protection against explosive breath sounds, even for close-up vocals or narration
• Yoke mounting with captive stand nut for easy mounting and dismounting provides precise control of microphone position
• Classic cardioid polar pattern, uniform with frequency and symmetrical about axis, to provide maximum rejection and minimum coloration of off-axis sound
• Rugged construction and excellent cartridge protection for outstanding reliability

SpecificationsType: Dynamic (moving coil)
Polar Pattern: Cardioid
Frequency Response: 50 Hz to 20 kHz
Output Impendance: 150 Ω in Bypass Mode, 27 Ω in Preamp Mode
Polarity relative to Pin 3: Positive pressure on diaphragm produces positive voltage on Pin 2
Net Weight: 837 g (1.875 lbs)
Housing: Black enamel aluminum and steel case with black foam windscreen

Sensitivity (at 1 kHz, open circuit voltage) [1] 1 Pa=94 dB SPL:
• -59 dBV/Pa[1] (1.12 mV) Flat Response Bypass Mode
• -41 dBV/Pa[1] (1.12 mV) Flat Response +18 Preamp Mode
• -31 dBV/Pa[1] (1.12 mV) Flat Response +28 Preamp Mode