2.4G wireless two-way transmission lavalier microphone, using wireless recording microphone system, multi-functional, can record straight or short video, realize bilateral sound transmission and synchronous monitoring.Dual-output otg digital transmission, plug and play. Using digital recording technology, it can achieve left and right dual-channel sound, creating lossless high-definition, stereo sound quality, and more outstanding on-site performance.Built-in high-capacity polymer battery, strong storage capacity, can be fully charged in 1.5 hours, and lasts for 12 hours, escorting your recording.100m wireless transmission can transmit an effective wireless distance of 100m. Colleagues use 2.4G two-way transmission signal to stabilize and continuously frequency, so that the performance of the scene is more free.One-key noise reduction gain, switch freely. When supporting microphone recording, one-key noise reduction adjustment can be performed according to your own environmental needs, thereby improving audio quality.Small size, easy to carry. The product weighs only 26g, and can be clipped on a shirt or jacket, making wireless radio more convenient.Wide range of applications, suitable for -film , video recording, live broadcast, interviews and vlogs, etc.Transmission frequency band: 2400MHz-2483.5MHzModulation : FM / digital (GFSK)Transmit : 10dBmReceive sensitivity: -85dBmMicrophone pickup : omnidirectionalAudio frequency response: 100-20KHz3dBSignal-to-noise ratio: 97dB splDisplay mode: LED supply: built-in lithium batteryBattery life: Greater than 7 hoursInput/output interface: 3.5mm Working temperature: -5~+50Size: 40x40x10mmColour:blackMaterial:ABSPackage Conten:1 x Receiver1 x Transmitter2 x Connecting cable1 x Charging cable1 x Windproof hair ball1 x Storage bag2 x Transfer cableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.