1、4GHz Microphone: This is plug and play 4GHz microphone wireless system, you can enjoy the fun of wireless 2、System Delay: This wireless microphone has an ultra low system delay of less than 5 milliseconds, so you can enjoy freely 3、High Performance Lithium Battery: Wireless microphone with built in high performance lithium battery, can work continuously for about 7 hours 4、More Possibilities: This microphone is suitable for a variety of scenarios, giving more possibilities, and you can enjoy the fun 5、High Fidelity Sound Quality: This is a wireless microphone with high fidelity sound quality, which wakes up your ears and immerses you in 1 x Transmitter1 x Receiver1 x Adapter Cable1 x Y Shaped Charging Cable1 x Receiver Bracket Item Type: 2.4GHz Wireless Microphone SystemMaterial: Plastic + ElectronicsColour: BlackSampling Rate: 24bit/ 44.1kHzDelay: Less than 3.5msEffective Distance: ≤30m (The actual distance will vary depending on the use environment)Dynamic Range: 110dBWireless Frequency Band: 2.4GHz ISM Frequency BandTotal Harmonic Distortion Plus Noise: Less than 0.2% (1kHz at - 10dbFS)Battery Continuous Working Time: About 7hBattery: 1 x Lithium Battery 700mAh (Shipped with built in battery)