The key advantage of a wireless microphone is that it gives greater freedom of movement. A notable disadvantage of a wireless microphone is that its operation time is limited by battery life. Compared to an ordinary condenser microphone, a wireless microphone runs on batteries that are greatly drained by the transmitting circuitry.

A wireless microphone system comprises a wireless receiver and a transmitter, or the microphone.

Since there are no connecting wires, a wireless microphone avoids the common issues that come with wired microphones especially due to the constant stressing and movement of the wires. Without running wires, there is no risk of trip hazards for performers.

On the downside, wireless microphones typically have a limited range, especially the average-priced ones. They typically do not exceed 100 meters, although there are exceptions. Wired microphones can run beyond the 100-meter range.

Another disadvantage is that wireless microphones are pricey, especially models with a longer range. Prices normally range between $200 and $2,000, and there is the added cost of batteries. In non-diversity systems, wireless microphones frequently experience dead spots or noise. Due to a limited number of radio frequencies, there can only be a limited number of wireless microphones operating at the same place.