I had the item checked at Book Off, and they confirmed that it works normally, although there is some minor noise. However, since it's been stored at home, I would appreciate your understanding. ↓ Quoted from the internet below: SHURE MX412D/S Conference and Speech Gooseneck Microphone ■ Gooseneck Condenser Microphone The MX412 delivers clear and delicate audio that conveys your message to the audience in detail, along with features to control unwanted noise. It provides reliable and dependable sound without noise or dropouts. The MX412 has a simple design that blends naturally into any venue, from classrooms to churches, and is easy to set up. It delivers excellent sound that is ideal for speeches, regardless of the venue size. ・Easy to Install The MX412 offers a variety of mounting and form factor options, making it easy to set up in any venue. ・Clean Signal Microflex incorporates ShureCommshieldR, which prevents radio frequency interference from smartphones, etc. You can focus on your speech without worrying about noise or sound dropouts. ・Select Only the Sound You Want the Audience to Hear The windscreen cuts out unpleasant sounds such as breathing and plosives, and the built-in shock mount absorbs vibration noise. Only the speech resonates clearly. ■ Two gooseneck sections allow for flexible adjustment of the microphone's position. ■ Standard and switch models have shock mounts that cut vibration noise by 20dB or more. ■ The cartridge is replaceable and available in three types: omnidirectional, supercardioid, and cardioid. ～Specifications～ ■ Polar Pattern: Supercardioid ■ Frequency Response: 50～17kHz ■ Impedance: 150 ohms ■ Open Circuit Sensitivity: -32.5dBre1V/Pa ■ Equivalent Noise Level (A-weighted): 28dBSPL ■ Maximum Sound Pressure Level: (1kHz, THD1%, 1k ohm load): 122dBSPL ■ Power Supply: Phantom DC11～52V, 2.0mA ■ Connector: XLR 3-pin, male ■ Dimensions/Weight: φ12 x Total Length 355mm, 1130g, Base: Width 116 x Height 53 x Depth 162mm ■ Accessories: Windscreen ■ Cable Length: 2.9m