I'm an international seller, your order will be shipped from China, we shipped all parcels by Yun Express, it will delivered in 8-14 days. please allow the necessary time about minimum 14 working days for delivery right now depending on your shipping country, due to ongoing delays in postal deliveries globally.Features:2.4G wireless transmission, up to 70m long transmission distance, safe, reliable and low latency.Built-in DSP active noise cancellation technology, the background noise is reduced by 50%. According to the noise frequency characteristics in different scenes, two gears of manual enhanced noise reduction are provided(75Hz/150Hz).Two transmitters can be divided into dual-channel, mono-channel or combined into mono-channel, to obtain maximum flexibility inpost-production.The receiver is designed with TFT display screen, it dynamically displays the working status in real time.Clip-on design, the back clip of the device can be used as a microphone lavalier, and it also can be adapted to the hot shoe slot of the camera.Small size and lightweight, easy to carry and use.Compatible with SLR, camera, mobile phone and computer. Suitable for live broadcasting, video conference, interviewing, speech, etc.Specification:Color: BlackMaterial: ABSTransmission distance: Up to 70mBattery capacity: 250mAhRF frequency: 2.4GHzTransmitting power: 14dBAudio gain: 0-4 levelSignal-to-noise ratio: 20Hz-14.5KHzNoise reduction grade: 0-75Hz-150HzMicrophone: Capacitive OmnidirectionalReceving sensitivity: -95dBMaximum output level: 1.7Vp-pOutput impedance: About 47Charging power: 5V/200mAItem size: 4.7 * 4.67 * 1.9cm /1.85 * 1.84 * 0.75inPacking list:2 * Transmitter1 * Receiver2 * Transmitter windproof cover2 * 3.5mm audio cable1 * Charging cable2 * Microphone1 * User manual