Microphone, 2.4G Wireless Microphone, Easy To Installed for Conference Tour Guide Specification: Description: This wireless microphone is adopted 2.4G wireless technology, using professional ID encryption transmission technology and automatically pairing devices. It can be easily removed and installed, on most audio devices, like video player, speaker, power , sound console and so on. It is a great choice for teaching, tour guide, conference, speech, etc. Features: 2.4G wireless technology, and the transmission distance can be up to 40m without directional restriction. Omni-directional and sensitive voice receiving, minimizes the harmonic distortion and keeps your voice and clear all the while. Professional ID encryption transmission technology, each product has a separate ID , multiple devices can be simultaneously at the same place without disturbing. With 3.5mm and 6.35mm connector, just plug and play, it will automatically match devices while power on. Wide Compatibility, fit well with most audio devices, like video player, speaker, power , sound console and so on. The transmitter is equipped with a lithium battery, which can be for more than 10 hours continuously. Small and light, comfortable for wearing, and easy to install and remove. Micro USB universal interface for easy charging. Specifications: Input Voltage: DC3.5V-5.5V Current: Less than or equal to 40mA Battery Type: Lithium Battery Charging Time: < 4h Working Time: Greater than or equal to 10h Frequency: 2400 - 2483 MHz Frequency Type: GFSK Transmission Distance: 40m RF Transmission Power: 10dBm Sensitivity: -88dBm S/N Ratio: Greater than or equal to 65dB Sampling Frequency: 16KS/s Operating Temperature: 0 degrees Celsius ~ 40 degrees Celsius Quality Certification: FCC, CE Color: Black Suitable for audio and loudspeakers Package Weight: 120g Package Size: Approx. 17 x 14 x 4cm Package List: 1 x Transmitter 1 x Receiver 1 x Headset Mount 1 x 6.35mm Adapter 1 x 2 in 1 Charging Cable 1 x User Manual Note: This 2.4G wireless microphone needs to be along with audio , and cannot be amplified independently. Audio is not included.